| accessory |
Aiding the principal design; contributory, supplemental, additional.
출처: www.fish.washington.edu/naturemapping/mollusks/glo...
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|---|---|
| accelerator |
Substance that shortens the setting times of concrete and mortar. Accelerators, or accelerants, are added in cold weather when there is a danger of the concrete or mortar freezing before it can cure properly. Accelerators are considered admixtures. Chemical substance added to a mixture to speed up a reaction.
출처: www.peakagents.ca/glossary/a2.htm
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| accessory |
Device that supplements the usefulness of a system or machine. Natural feature, such as a rock formation, used as a reference point in surveying.
출처: www.peakagents.ca/glossary/a2.htm
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| accelerometer |
A device used to measure the rate of change in velocity over a specific period of time. Measures the rate or "speed" of the tremor cycle.
출처: www.dbs-stn.org/glossary.asp
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| acceptor |
group three elements in the periodic table such as boron, B, aluminum, Al, gallium, Ga, or indium, In, have one less electron in the outer most energy level than silicon, Si. When these atoms are introduced into silicon, an impurity level is created near the valence band. At zero degrees kelvin the impurity level is empty, at room temperature sufficient energy is available to excite electrons from the valence band into the impurity level. ...
출처: www.icknowledge.com/glossary/a.html
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