Different grades of crystal polystyrene molding pellets range from 150,000 to 350,000 weight average molecular weight.不同牌号的结晶聚苯乙烯模塑粒料平均分子量范围从150,000-350,000.What factors does he take into consideration in determining the...
They were ejected from the burning plane.他们从起火的飞机中弹了出来.The patron of the bar was ejected for creating a disturbance.酒吧客人因制造骚乱而被驱离.The ejected mass then probably becomes the observed material of a supernova outburst.在这种情况...