The multi-step approach makes this artificial heart much cheaper to build than those that use compressed air to pump the blood.
与使用电池动力压缩空气将血液输送到全身的装置相比，新型人造心脏的造价更加低廉。
Modern artificial hearts are less cumbersome, but they are still rather unwieldy because they use compressed air to pump the blood and are powered by heavy batteries.
相比之下，现代的人造心脏装置虽没那么笨重，但可操作性仍然不强，因为人们须借助外接电池组提供动力用压缩空气将血液输送往全身各个部位。
A constriction in a powder pump that USES compressed air to lift and transport powder from feed system to the spray gun.
在粉末泵中的收缩能够使压缩空气从喂料系统到喷粉枪提升和搬运粉末。
应用推荐