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Datum line
| Глоссарий терминов и сокращений по оптическим линзам |
- A line at the midpoint between the top and bottom of a lens, also referred to as the 180? line. unless otherwise specified, optical centers are ground on this line. “dbc” – distance between centers. “dbl” - distance between lenses – the closest distance between lenses. the figure is needed to compute decentration and is measured from the closest nasal point of one lens to the closest nasal point of the other lens. this measurement may be different that the marked bridge number on the frame.
- Базовая линия; база; ось координат
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Reference line., английский
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Datum, немецкий
Datum, английский
- Начало [нуль] отсчета
- Исходное значение; начало отсчета; начальный уровень
- A position or element in relation to which others are determined.
- Данная величина; базовая линия
- A level surface or point to which other levels are related; a reference in measuring elevations.
- Точка отсчета
- The base level.
- (1) a material unit representing information about a portion of the real world that can be processed by explicit procedures and maintains its characteristics during repeated use. (2) a fact or figure transcribed in a readable language and on a durable medium (->channel). e.g., a completed questionaire, a taped interview, the recorded results of an experiment. events that leave no physical marks cannot be traced through data and physical marks that can no longer be interpreted, e.g., because the code linking them to particular observations is unavailable, loose the status of data. a datum rarely stands alone, hence the common use of its plural data. science typically processes large collections of data. in statistics each datum of a collection must contain the same kind of information.
Datum, английский
Datum, шведский
Datum , i, n, латинский
Datum dimension, английский
A dimension that exactly locates a reference point, reference line, or reference plane.
Datum level, английский
Datum level or datum plane, английский
The base or top of a range of fossils that can be correlated in sections over a wide area (see section 7.c.4).
Datum mark, английский
Datum mark; checking point; check point; control point; control survey 35 point; datum point; fix, английский
Datum plane, английский
- A plane from which distances or dimensions are reckoned.
- Базовая плоскость
Datum point, английский
A point used as the basis for reckoning.
Datum water level, английский
Datuming, английский
Установка (рабочего органа станка) в исходное положение
Line, английский
- The basic unit of a frame or field containing the charge, which is proportional to the light falling at various points on the scanning line.
- L
- A report on how well a stranger plays
- Линия
- The correct nautical term for the majority of the cordage or "ropes" used on a vessel. a line will always have a more specific name, such as mizzen topsail halyard, that specifies its use.
- Линь, вер?вка, шнур
- Линь, линия
- The general appellation of a number of small ropes in a ship, as buntlines, clue-lines, bowlines, &c. also, the term in common parlance for the equator. also, in the army, distinguishes the regular numbered regiments of cavalry and infantry from the artillery and guards, to whom exceptional functions are assigned. in fortification, it means a trench, approaches, &c. in a geometrical sense, it signifies length without breadth; and in military parlance, it is drawing up a front of soldiers.—concluding line. a small rope, which is hitched to the middle of every step of a stern-ladder.—deep-sea line. a long line, marked at every five fathoms with small strands of line, knotted, and used with the deep-sea lead. the first 20 fathoms are marked as follows: 2 and 3 fathoms with black leather; 5 with white bunting; 7 with red; 10 with leather and a hole in it. then 13, 15, and 17 repeat the previous marks of 3, 5, and 7. two knots indicate 20, three knots 30, four knots 40 fathoms, and so on, with an additional knot for every ten. meanwhile a single knot indicates the intermediate fives. besides this system some pilots prefer their own marks, as in the hooghly, where they always measure the line for themselves. the term “deep-sea line” must not now be confined to the use of the lead for the ordinary purposes of safe navigation; deep-sea soundings for scientific purposes are recorded in thousands of fathoms, in which case the line is sometimes made of silk, the object being to obtain the largest amount of strength with a small weight.—fishing-lines. particular kinds of lines, generally used for fishing snood, mackerel, whiting, cod, albacore, &c.—hand-line. a line about 20 fathoms long, marked like the first 20 fathoms of the deep-sea line. it is made fast to a hand-lead of from 7 to 14 lbs., and used to determine the depth of water in going in or out of a harbour, river, channel, &c.— hauling-line. any rope let down out of a top, &c., to haul up some light body by hand.—knave-line. a rope fastened to the cross-trees, under the main or fore top, whence it comes down by the ties to the ram-head, and there it is rove through a piece of wood about 2 feet long, and so is brought to the ship`s side, and there hauled up taut to the rails.—life-line. a rope occasionally extended in several situations for persons to lay hold of, to prevent their falling.—mar-line. a particular kind of small line, composed of two strands very little twisted; there is both tarred and white mar-line. that supplied for the gunner and for bending light sails is untarred.—navel-line. a rope depending from the heads of the main and fore masts, and passed round to the bight of the truss to keep it up, whilst the yard is being swayed up, or when the truss, in bracing sharp up, is overhauled to the full.—spilling-lines. ropes fixed occasionally to the square sails, particularly the main and fore courses in bad weather, for reefing or furling them more conveniently; they are rove through blocks upon the yard, whence leading round the sail they are fastened abaft the yard, so that the sail is very closely confined.—white-line. that which has not been tarred, in contradistinction to tarred line.
- [1] is generally defined as being cordage of less than 1-inch (2.5 cm) in circumference. [2] in the usn it refers to rope that has been unspooled and cut for use. [3] one of the dimensions of a convoy, see column. see also braided line.
- Lines. 1. wire and/or fiber ropes and cables. 2. a given direction, bearing, or course.
- To cover the inner surface of. a lined tunnel is a tunnel where
- Гидролиния, магистраль
- A description of the location and grade of a tunnel.
- A continuous mark on a surface, which imparts motion and contour to a design.
Line, английский
The measurement of the variation of the actual horizontal alignment of rail over a nominated chord length compared with the design alignment.
Line, английский
Rope and cordage used aboard a vessel.
Line, английский
Line, русский
Отчёт о том, насколько хорошо играет незнакомец
Line (motion) control, английский
Decentration, английский
The act of moving the optical center of a lens away from the geometric center of a shape or frame for the purpose of aligning the optical center over the pupil. the lens may also be displaced away from the wearer’s line of sight for the purpose of creating prismatic effect. degree (?) – the 360th part of the circumference of a circle. the unit used for specifying the position of the axis of a cylinder or the location for the base of a prism.
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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Decenter, английский
- To place out of center.
- To remove centering or shoring.
Cylinder lens, английский
A compound lens with a toric surface with the two separate dioptric meridians 90? apart. may be recorded in (-) or (+) power. it is always followed by an axis, the direction in which there is no power of the cylinder. a prescribed amount of power that is added or subtracted to the lens sphere power to create two different powers in the principal meridians. d datelite 14 x 35 trifocal – an occupational trifocal designed for computer use with a wider (35 mm) and deeper intermediate seg (14mm) with intermediate power of 50-66% in the trifocal area.
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