“counter pressure casting”的概念、定义、翻译、参考文献-科学参考

单词	counter pressure casting
释义	counter pressure casting Encyclopedia 工学低压铸造释 counter pressure casting差压铸造将铸型及金属液分别放置在上压室和下压室内，浇注时上下压室同时通入压缩气体建立一定压力，然后通过排气或进气方式在上下室之间建立压差，使金属液在压差作用下沿升液管流动，自下而上充填铸型并在一定压力下凝固成型的铸造方法。
随便看	time invariance time-invariant time-invariant channel time invariant circuit time-invariant control system time-invariant control systems time-invariant model time-invariant network time invariant system time-invariant system time inversion time keeper time keeping time-keeping time keeping system time-kill curve time lag time lag effect of invasive species time-lagged time lag of monetary policy time lag of the ignition time-lapse time-lapse photography time-lapse seismic timelessness communication

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