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Cutback technique
| Fiber Optic Glossary |
A destructive technique for determining certain optical fiber transmission characteristics, such as attenuation and bandwidth, by (a) performing the desired measurements on a long length of the fiber under test, (b) cutting the fiber under test at a point near the launching end, (c) repeating the measurements on the short length of fiber, and (d) subtracting the results obtained on the short length to determine the results for the residual long length.
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Cutback, английский
- Маневр на волне, состоящий из скатывания назад с ее гребня.
- Разжиженный битум
Cutback asphalt, английский
An organic, bituminous roof coating or flashing cement in a volatile solvent, applied without heat; also used for dampproofing and for priming concrete and masonry surfaces.
Cutback bitumen, английский
Cutback furrow stream, английский
Поливная струя уменьшенного размера
Cutback irrigation, английский
Орошение по бороздам уменьшающимся по времени расходом
Cutback method, английский
A technique for measuring fiber attenuation by performing two transmission measurements. one is done at the output end of the full length of the fiber. the other is usually done within 1-3 meters of the input end and accessed by “cutting back” the test fiber and measuring the change in the pre- and post-cutback measurements
Cutback phase, английский
Cutback solvent, английский
See diluent.
Technique, английский
- A way of doing scientific or medical work a new technique for treating osteoarthritis she is trying out a new laboratory technique. ‘…few parts of the body are inaccessible to modern catheter techniques, which are all performed under local anaesthesia’ [british medical journal] ‘…the technique used to treat aortic stenosis is similar to that for any cardiac catheterization’ [journal of the american medical association] ‘…cardiac resuscitation techniques used by over half the nurses in a recent study were described as ‘completely ineffective’’ [nursing times]
- N техника acoustic acoustic ~ акустическая техника audirory ~ ~ слуховая акустическая техника instrumental acoustic ~ техника инструмен- тальной акустики articulation ~ артикуляционная техника: audirory ~ ~ слуховая articulatory ~ артикуляционная техника: instrumental ~ ~ инструментальная imitation label ~ техника называния (к. пайк )
- Технический прием. научный прием, например такой как газовая хрома-тография или ультрафиолетовая спектрометрия, который может применяться для получения данных о составе материала. обычно технический прием не применяется непосредственно к исследуемому образцу, поскольку предварительно, как правило, требуется провести экстракцию и предпринять другие шаги. поэтому технический прием, как правило, используется на последнем этапе аналитического метода, кото-рый представляет собой конечное определение или определение на конечном этапе. test
- Технический прием. научный прием, например такой как газовая хроматография или ультрафиолетовая спектрометрия, который может применяться для получения данных о составе материала. обычно технический прием не применяется непосредственно к исследуемому образцу, поскольку предварительно, как правило, требуется провести экстракцию и предпринять другие шаги. поэтому технический прием, как правило, используется на последнем этапе аналитического метода, который представляет собой конечное определение или определение на конечном этапе.
- See pitch catch technique.
- Technique where thickness is measured between multiple back reflections, minimizing error from coatings or from changes in temperature or contact pressure.
- Test technique in which ultrasonic energy is transmitted through the test object and received by a second transducer on the opposite side. changes in received signal amplitude are taken as indications of variations in material continuity.
- In magnetic particle testing, field flow magnetization technique where magnetic poles of like polarity are induced on the ends of a test object to force magnetization into extremities that are normally field free. bucking fields are generally imparted with a pair of iron core induction coil pole extenders on a wet horizontal machine.
Technique chart (rt), английский
Technique de la chaleur (en construction), французский
Technique et service municipales, французский
Technique sanitaire 013 санузел см . узел санитарный, французский
Techniqueey, английский
1. a technichal way of doing something. 2. highly technical, intelligent, crafty, alf-like and extraordinary, in a socially unacceptable manner. example 1. you wrote the sentence in a techniqueey way that confuses me. 2. the burp sound that you created on the computer was so techniqueey.
Techniques and methodology working group, английский
Techniques for human error rate prediction, английский
Методика предвы- числения [прогнозирования] ошибок человека
Techniques of water resources investigations (usgs), английский
Destructive, английский
- Вредный
- Разрушаемый; выполняемый с разрушением
Determining, английский
Определение о ~ reactions
Transmission, английский
- Passage of electromagnetic radiation through a medium.
- Transmisión
- The property in a merchantman, or a share therein, transmitted in
- Передача; привод; коробка передач; трансмиссия; прохождение; распространение ~ of loads передача нагрузок
- The transport of high voltage electricity. this is achieved with a transmission network (or grid). generally the network will connect large generators to lower voltage distribution networks where it will be transported to the majority of electricity consumers. alternatively, large scale electricity users may connect directly to the transmission network. management of transmission is a natural monopoly due to the economies of scale inherent to it. transmission system operator (tso) (also transmission network operator-
- The sending of information over a communications line or a circuit.
- The transportation of electric energy in bulk from a source or sources of supply to other systems or parts of a single system.
- Transfer of pathogens from one host to another
Characteristics, английский
- The distinguishing qualities of a navigation aid or buoy, including shape and color, whether fixed or flashing, and flashing sequence.
- A high-performance fiber with high chemical resistance that does not burn in air. it has no melting point and does not drip when exposed to flame. the fiber and fabrics from pbi retain their flexibility, dimensional stability, and significant strength without embrittlement even when exposed to flame or extreme heat. the fiber emits little smoke in extreme conditions. it processes well on conventional textile equipment, having processing characteristics similar to polyester. it can be used in 100% form or blended with other fibers. it has a high moisture regain and low modulus with comfort properties similar to cotton. the natural color of pbi is a gold-khaki shade, but it can be dyed to almost any medium to dark shade with conventional basic dyes.
- Acetate fabrics are in appearance fast-drying, wrinkle and shrinkage resistant, crisp or soft in hand depending upon the end use.
- Although modacrylics are similar to acrylics in properties and application, certain important differences exist. modacrylics have superior resistance to chemicals and combustion, but they are more heat sensitive (lower safe ironing temperature) and have a higher specific gravity (less cover).
- Although the properties of the nylons described above vary in some respects, they all exhibit excellent strength, flexibility, toughness, elasticity, abrasion resistance, washability, ease of drying, and resistance to attack by insects and microorganisms.
- Because acrylic fibers are thermoplastic, fabrics may be heat-set for wrinkle resistance and to provide permanency to pleats. acrylic fabrics have low moisture absorbency and dry relatively quickly. in general, acrylic fibers are resistant to the degrading effects of ultraviolet rays in sunlight and to a wide range of chemicals and fumes. they provide warmth in fabrics that are lightweight, soft, and resilient. acrylic fibers have relatively poor flame resistance compared with other fibers. some acrylic fabrics, particularly knit types, approximate the hand of fine wool. because of the composition and cross section of the fiber, fabrics made therefrom have a high bulk to weight ratio. this is further enhanced with the so-called “high bulk” spun yarns.
- Glass fiber is incombustible and will tolerate heat up to 1000°f without material damage. potential strength is not realized in woven fabrics or even in yarns, because the fiber is brittle and fracture points may develop, but nevertheless, very high tensile strength is obtained in woven fabrics, and is retained at elevated temperatures. the fiber originally was difficult to color but methods have been developed to accomplish this. moisture absorption is low. electrical and insulation resistance is high.
- Polychlal fibers have a soft, lamb’s wool-like hand and moderate moisture regain. the fibers are also characterized by high flame resistance and high abrasion resistance.
- Polyester fibers have high strength and are resistant to shrinking and stretching. fabrics are quick drying and tend to have wrinkle resistance and crease retention, wet and dry. polyester is used alone and in blends. it has been one of the first fibers to be developed in fabrics with durable-press features.
- Polyethylene fibers have a low specific gravity, extremely low moisture regain, the same tensile strength wet and dry, and are resistant to attack by mildew and insects. these qualities have made polyethylene fiber suitable for industrial applications, geotextiles, outdoor furniture, and similar applications. polyethylene fiber does not dye, and in most cases, it is colored by the addition of pigments and dyes to the material prior to spinning. it has a low melting point, a property that has restricted its use in apparel.
- Polypropylene fibers have a number of advantages over polyethylene fibers in the field of textile applications. the degree of crystallinity, 72 to 75%, results in a fiber that is strong and resilient, and does not fibrillate like high-density polyethylene. polypropylene has a high work of rupture, which indicates a tough fiber, and may be made with tenacities as high as 8.0 to 8.5 grams per denier. the melting point of polypropylene is 165°c, which is low by comparison with nylon or polyester, but is high enough to make it suitable for most textile applications. so light that it actually floats, polypropylene fiber provides greater coverage per pound than any other fiber. it is highly resistant to mechanical abuse and chemical attack.
- Rayon yarns are made in a wide range of types in regard to size, physical characteristics, strength, elongation, luster, handle, suppleness, etc. they may be white or solution dyed. strength is regulated by the process itself and the structure of the yarn. (also see polynosic fiber.) luster is reduced by including delustering materials, such as titanium dioxide pigments, in the fiber when it is extruded. the suppleness of the yarn is controlled by the number of filaments in the yarn, the denier or gauge of the individual filaments or fibers, and the fiber cross-section.
- Spandex is lighter in weight, more durable, and more supple than conventional elastic threads and has between two and three times their restraining power. spandex is extruded in a multiplicity of fine filaments which immediately form a monofilament. it can be repeatedly stretched over 500% without breaking and still recover instantly to its original length. it does not suffer deterioration from oxidation as is the case with fine sizes of rubber thread, and it is not damaged by body oils, perspiration, lotions, or detergents.
Attenuation, английский
- The decrease in magnitude of a signal, as it travels through a medium. used to describe signal loss in a transmission system. measured in decibels (db).
- Поглощение
- Зависимость снижения мощности сигнала от расстояния. для оптоволоконных кабелей обычно выражается в дб/км
- In general terms, a reduction in signal strength.
- The decrease in magnitude of a wave, or a signal, as it travels through a medium or
- The difference between transmitted and received power due to loss through equipment, lines, or other transmission devices; usually expressed in decibels. the loss in power of electromagnetic signals between transmission and reception points.
- The decrease in magnitude of a wave, or a signal, as it travels through a medium or an electric system. it is measured in decibels (db).
- The loss of optical power, whether caused intrinsically (absorption, scattering, microbends, etc.), or extrinsically by components (connectors, splices, splitters, etc)
- The decrease in radiation energy (power) as a beam passes through an absorbing or scattering medium.
- Reduction of signal magnitude, or loss, normally measured in decibels. fiber attenuation is normally measured per unit length in decibels per kilometer. the decrease in signal strength along a fiber optic waveguide caused by absorption and scattering. attenuation is usually expressed in db/km.
- A reduction in the effect or strength of something such as a virus, either because of environmental conditions or as a result of a laboratory procedure
- Ослабление
- Ослабление (затухание). уменьшение количества радиации при ее прохождении через вещество в результате всех видов взаимодействия с этим веществом. ослабление обычно не связано с уменьшением геометрических размеров (мос, 5). ослабление солнечной радиации — потеря энергии световым лучом при его прохождении через атмосферу земли. потеря энергии обусловлена рассеянием света молекулами воздуха, селективной абсорбцией молекулами определенных веществ и рассеянием света аэрозолями (вмо).
- The weakening of a transmitted signal, such as the distortion of a digital signal or the reduction in amplitude of an electrical signal. attenuation is usually measured in decibels and is sometimes desirable, as when signal strength is reduced electronically, for example, by a radio volume control, to prevent overloading.
- The weakening of a transmitted signal, such as the reduction in the brightness of light, as it travels farther from its source.
- Regulatory system of prokaryotes whereby secondary stem-loop structures formed within the 5’ end of an mrna being transcribed determine both if transcription to complete the synthesis of this mrna will occur and if this mrna will be used for translation
- Decrease in transmitted energy intensity over distance. the loss may be due to absorption, scattering, reflection, leakage, beam divergence, or other material effects.
- Снижение интенсивности передаваемой энергии на расстоянии. потери могут быть вызваны поглощением, рассеянием, отражением, утечкой, расходимостью луча или другими материальными эффектами.
- Decrease in signal magnitude during energy transmission from one point to another. this loss may be caused by absorption, reflection, scattering of energy or other material characteristics or may be caused by an electronic or optical device such as an attenuator.1
- (1) decrease in energy or signal magnitude in transmission from one point to another. can be expressed in decibels or as a scalar ratio of the input magnitude to the output magnitude.16 (2) change in signal strength caused by an electronic device such as an attenuator. (3) decrease in intensity caused by absorption, leakage, reflection, scattering or other material characteristics. see also neper.
- (1) decrease in acoustic energy over distance. this loss may be caused by absorption, leakage, reflection, scattering or other material characteristics. (2) decrease in signal amplitude caused by acoustic energy loss or by an electronic device such as an attenuator.10,16,21
Performing, английский
Characteristic, английский
- Property that helps to distinguish between items of a given population (3)
- A quality which allows something to be recognised as different cancer destroys the cell’s characteristics. adjective being a typical or distinguishing quality symptoms characteristic of anaemia the inflammation is characteristic of shingles.
- N характеристика (см. тж. portrayal) articulatory ~ артикуляторная характеристика perceptual ~ перцептивная характеристика, характеристика восприятия
- Характерная особенность, признак; характеристика, особенность ~s of the loading особенности [параметры] нагружение (конструкции)
- The characteristic dimension dc
Measurement, английский
- Set of operations having the object of determining a value of a quantity (1)
- Измерение. система мер.
- Измерение; замер
- The size, length, etc. of something which has been measured
- Измерение
- Обмер
- Оценка
- Измерение dust ~ измерение концентрации пыли
- Измерение. комплекс операций, имеющих целью определение значе-ния величины [32].
- The process of ascertaining the attributes, dimensions, extent, quantity, degree or capacity of some object of observation and representing these in the qualitative or quantitative terms of a data language. any empirical pursuit that places the observer outside his object of observation must consider measurement the fundamental process through which scientific constructs or models are linked to reality (->index, ->symptom). otherwise measurement is only one section in a circular process of computing a stable form. the traditional levels of measurement are nominal, ordinal, interval and ratio scales.
- The magnitude of the property of an object calibrated against one or more units of measure.
- Измерение. комплекс операций, имеющих целью определение значения величины [32].
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Integrated detector/preamplifier (idp), английский
A detector package containing a pin photodiode and transimpedance amplifier.
Preform, английский
- A cylindrical rod of specially prepared and purified glass from which an optical fiber is drawn.
- 1. fabrics that have been stacked in multiple layers and bonded with a stitching yarn or by other means. the preform may be cut into a shape for subsequent molding into a composite part. 2. a preshaped nonwoven made by distributing fibers over a screen in the approximate contour of the finished part. 3. a preshaped, three-dimensional reinforcement made via braiding, weaving, or knitting or some combination of these. 4. a formed but not fully consolidated stack of prepreg layers which have the contour of the finished product. 5. the first stage in the production of blow-molded products such as pet bottles.
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