单词 | compression ratio |
释义 | compression ratio [kǝm`presh·ǝn ´rā·shō] ELECTRONICS The ratio of the gain of a device at a low power level to the gain at some higher level, usually expressed in decibels. Also known as compression. MECHANICAL ENGINEERING The ratio in internal combustion engines between the volume displaced by the piston plus the clearance space, to the volume of the clearance space. Also known as compression. METALLURGY Ratio of the volume of loose metal powder to the volume of the compact made from it. |
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