Generators, cement - mixers, air compressors shook the ground.发电机 、 混凝土搅拌机和空气压缩机的吼声,震荡山谷.Oil - free compressors of course, are the logical choice for instrument - air supplies.自然, 无油压缩机必然被选择为仪用空气供给者.High pressure was use...
He has to pit his wits against an adversary who is cool, clever and cunning.他不得不与一个冷静、聪明而又狡猾的对手斗智。Elliott crossed the finish line just half a second behind his adversary...埃利奥特跨过终点线时仅比对手落后半秒钟。Elliott crossed the finish l...
正极带正电荷,负极带负电荷.The positive pole carries a positive charge while the negative pole does a negative charge.一些射线稍稍弯向负极.Some of the radiation was bent slightly toward the negative pole.两块磁铁的负极相互排斥.The negative poles of two m...