A vacuum pump, housed in a rusty ammo box, captured a fumarole's plume.
一个生锈盒子里装着一台真空泵，用来捕获喷气孔冒出的烟羽。
2
The overall design for the hydraulic top drive, discussed how to choice the motor, pump, and the design and layout of the gear box, the brake energy recovery and so on.
对液压顶驱进行了总体设计，讨论了马达、泵等的选择，减速箱的设计方案与布局，刹车制动能量回收等。
3
The optimal hydraulic design can effectively improve the outlet flow pattern of suction box to ensure better flow conditions for pump and raise the efficiency of pumping system substantially.