Now generally used PTEE, EPDM and other material for the valve seat, so bubbles leakproofness good.现一般均使用PTEE 、 EPDM等材料,为阀座, 因此,气泡密封性佳.Especially in automobile industry, the leakproofness of cylinder influences the perfo...
The method has the instrument more automatized and provides higher accuracy in measurement as well.该方法不但提高仪器的自动化程度,而且能够提高测量精度.The reference program provided by this paper can make the constructive process automatized.本文提...
The group's debut album was immediately acclaimed a hip hop classic.这个组合的首张专辑一经推出便被盛赞为嘻哈乐的经典之作。"Daring Adventures" from '86 is a far more cohesive and successful album.1986年发行的《勇于冒险》是一张风格更为统一也更为成功的专辑。The band&#...
The election was held six months ahead of schedule.选举提前了6个月举行。The jet arrived in Johannesburg two minutes ahead of schedule.喷气式飞机提前两分钟到达了约翰内斯堡。We laboured hard to finish our job ahead of schedule.我们努力工作,以期把活儿提前干完....