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单词 standard conditions
释义 standard conditions
[`stan·dǝrd kǝn`dish·ǝnz]
PHYSICS
1. A temperature of 0°C and a pressure of 1 atmosphere (760 torr). Also known as normal temperature and pressure (NTP); standard temperature and pressure (STP).
2. According to the American Gas Association, a temperature of 60°F (155/9°C) and a pressure of 762 millimeters (30 inches) of mercury.
3. According to the Compressed Gas Institute, a temperature of 20°C (68°F) and a pressure of 1 atmosphere.
SOLID-STATE PHYSICS
The allotropic form in which a substance most commonly occurs.
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