The flow of air through the fan is substantially parallel to the impeller axis.通过风机的气流基本上是与叶轮轴平行的.Impeller are open, and closed three - Banbi, as shown in Figure 2 - 2 .叶轮有开式 、 半闭式和闭式三种, 如图 2-2 所示.Impeller has single - a...
锋利的刀刃可能会划伤皮肤，导致出血。A sharp blade is likely to nick the skin and draw blood.锻造刀刃需要很高超的技巧。To forge a blade takes great skill.刺刀刃是用最优质的钢锻造的.A bayonet blade is forged from the finest steel....
Other projects came up and the emphasis of my work altered.突然来了一些其他的项目，我的工作重点便转移了。Computers allow the plans to be fine-tuned and to be altered quickly.计算机使得这些图样能够得到细调，并且可以迅速更改。The altered landscape looks unnatural and we...