要获得饱和均匀的装填是困难的.A saturated uniform packing is difficult to obtain.设计人员可选择小的通道直径,从而能得到较好的装填系数.The designer can select small port diameters and thereby achieve better loading fractions.每个小组通常有2名射手和2名装填手.This division was i...
Go over to your PC and boot it up.去启动你的个人电脑。Let's go over and help them pull the cart.咱们过去帮他们拉车.This matter will go over until the next session.这件事将留待下次会议讨论....
焦炭是一种很经济的燃料,可是燃烧后剩下很多灰.Coke is an economical fuel but it leaves a lot of ash.焦炭被用作燃料和制造钢铁.Coke is used as fuel and in making steel.达比一直在寻找改善铁质的方法，他猛然想到可以不用木炭熔炼，而改用焦炭。Darby was looking for a way to improve iron when he hi...