常見(jiàn)例句雙語(yǔ)例句Through analyzing the density of vacuum counter-pressure casting samples under different keeping pressures, their solidification feeding behavior and mathematical model were discussed.對(duì)不同保壓壓力下真空差壓鑄造試樣致密度進(jìn)行分析，探討真空差壓鑄造工藝的凝固補(bǔ)縮特性，建立凝固補(bǔ)縮過(guò)程的數(shù)學(xué)模型。 返回 vacuum counter-pressure casting