The preparation of hypoeutectic Al - Si alloy billets for semisolid forming by low temperature casting was studied.研究了低温铸造法制备亚共晶 铝硅 合金半固态成形用坯料.He is sick and has been casting up all night.他病了,夜里一直在呕吐。In the case of rimmi...
她的病床用屏风与其他病人隔开。Her bed was screened off from the other patients.她到屏风后面去换装。She went behind the screen to disrobe.这屏风上的画是件很好的艺术品.The picture on this screen is a good artistic work....