“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	constant-pressure surface constant radio code constant-resistance dc potentiometer constant-resistance network constant series constant-speed drive constant-speed propeller constant term constant-velocity recording constant-velocity universal joint constant-voltage generator constant-voltage transformer constant-volume gas thermometer Constellariidae constellation constipation constituent constituent day constituent number constitutional anthropology constitutional isomers constitutional unit constitution diagram constitutive enzyme constitutive equations

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