“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	Health resource allocation method health revenue collection health risk assessment health risk assessment for site health risk assessment of EMF health risk factors appraisal health safety and environment management system health savings accounts health security system Health Service health service cost health service demand function health service informatization health serviceman health service market health service organization health service price health services research Health service statistics health service support Health service survey health service training health standard for aquatic animals health standards Health statistical methods

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