“expansion ratio”的概念、定义、翻译、参考文献-科学参考

单词	expansion ratio
释义	expansion ratio [ik`span·shǝn ´rā·shō] ^{FLUID MECHANICS} For the calculation of the mass flow of a gas out of a nozzle or other expanding duct, the ratio of the nozzle exit section area to the nozzle throat area, or the ratio of final to initial volume. ^{MECHANICAL ENGINEERING} In a reciprocating piston engine, the ratio of cylinder volume with piston at bottom dead center to cylinder volume with piston at top dead center.
随便看	paleophycology paleophysiography Paleophytic ferrotremolite ferrotungsten ferrotype ferrouranium ferrous ferrous acetate ferrous alloy ferrous ammonium sulfate ferrous arsenate ferrous carbonate ferrous chloride ferrous hydroxide ferrous oxalate ferrous oxide ferrous sulfate ferrous sulfide ferrovanadium ferruccite ferruginous ferrule ferrum ferry

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