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Hot filament ionization gauge
| Глоссарий по тестированию |
Absolute pressure gauge that monitors ion current proportional to gas density at pressures less than 0.1 pa (0.8 mtorr). electrons produced by a heated filament ionize the gas (the thermionic phenomenon) and produce a positive ion current that flows to a wire collector. this current is proportional to gas density over the absolute pressure range below 0.1 pa for a given gas composition. filaments may be of pure metal (such as tungsten), or oxide coated (such as yttria or thoria coated iridium). also called bayard-alpert gauge. compare cold cathode ionization gauge. 744 glossary i-k i
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Proportional, английский
- Член пропорции
- A пропорциональный analogy
- Пропорциональный
Thermionic, английский
Phenomenon, английский
- 1. a fact or situation which can be observed 2. someone or something that is considered to be extraordinary and marvellous
- A condition with various possible causes in which the blood supply to the fingers and toes is restricted and they become cold, white and numb. also called dead man’s fingers, vasospasm [described 1862. after maurice raynaud (1834–81), french physician.] rbc rbc abbr red blood cell rcgp rcgp abbr royal college of general practitioners rcn rcn abbr royal college of nursing rcog rcog abbr royal college of obstetricians and gynaecologists rcp rcp abbr royal college of physicians
- In diabetes mellitus, a swing to a high level of glucose in the blood from an extremely low level, usually occurring after an untreated insulin reaction during the night. it is caused by the release of stress hormones to counter low glucose levels.
- Явление; эффект
Composition, английский
- Состав
- A photographic process in which patterns on two separate substrates are
- The arrangement of subject matter, graphic elements, tones, and light in a scene. can be harmonious or discordant, depending on the photographer, his or her mood, and the subject at hand. there are no set rules, just suggestions; successful compositions are ones that best express particular feelings about the subject or scene.
- N словосложение; образование (ант. decomposition) polysynthetic ~ полисинтетическое объедине- ние
- A composition is a function or relationship that can be constructed from other functions or relationships. for example, the function grandparent(x) is a recursive composition of the parent() function, grandparent(x) = parent(parent(x)). compositional rule of inference (cri) see: fuzzy associative memory. computer-aided design (cad) the process of using a computer to aid in the design and (cadcam) manufacture of objects or systems. the complexity of these systems range from basic drawing systems through systems that can warn you about basic dimensional constraints to systems that understand and implement constraints based on other properties of the objects in the system. it is used for the design of mechanical, electronic, construction, and other systems. computer-aided education the use of computers to aid in the education of personnel. computer-aided instruction, intelligent see: intelligent computer-aided instruction. computer integrated manufacturing (cim) computer integrated manufacturing refers to the integration of computer sensors and controllers into a manufacturing process. this includes three types of functions. first the computers provide programmable and flexible automation of the manufacturing process. this leads to the ability to optimize the process flexibly to react to current variations in the process. finally, the various sensors and controllers can be integrated into a comprehensive system.
- A whole-part relationship in which the life cycle of the part object is dependent on the life cycle of the whole object.
- An activity flow created from multiple actions. composition is core to the human workflow services system.
- An export format that flattens a group of images defined in a deep zoom composer project into a single high-resolution image that is generated at export.
- One or more images that are positioned, arranged, ordered, and proportionally resized according to a user’s specifications within a deep zoom composer project.
- Voluntary arrangement to restructure a firm`s debt, under which payment is reduced.
Ionization, английский
- Ионизация (напр, воздуха); ионирование (обработка воды иони- тами) air ~ ионизация воздуха 310 item
- Ионизация
- Ионизация. см. ion— ион.
- The process by which a molecule or atom acquires a negative or positive charge by gaining or losing electrons to form ions.
- The process of adding electrons to, or knocking electrons from, atoms or molecules, thereby creating ions. high temperatures, electrical discharges, and nuclear radiation can cause ionization.
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Immersion leak test, английский
Technique in which the test object is pressurized and then submerged in detection fluid. the formation of bubbles from the object indicates a leak; the absence of bubbles indicates leaktightness. compare foam leak test.
Hood test, английский
Quantitative dynamic test in which a sample under vacuum is enclosed within a volume filled with tracer so that the entire part is simultaneously evaluated.
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