two-piston reciprocating pump 双活塞往复泵 ; 双活塞来去泵
two rotor radial piston pump 双转子径向活塞泵
two-piston pump 双柱塞泵
two-rod piston 双活塞杆的活塞
two ring piston 双环式活塞
opposed-piston two-stroke 对置活塞二冲程
two rod piston 双活塞杆的活塞
two piece piston 组合式活塞
two-piece piston 拼合式活塞
A two-stroke engine has no moving valves, and the spark plug fires each time the piston hits the top of its cycle.
二冲程发动机没有移动的阀，火花塞每次点火活塞到达循环顶端。
On these pistons the number piston rings was reduced to three, two compression and one oil-control.
在这些活塞中，活塞环的数量减少到三个，即两个气环，一个油环。
Normal production conditions, often open the two Taiwan screw compressor and a piston compressor, mainly for converter, rolling and tropical in three production unit of gas supply.
正常生产情况下，通常开两台螺杆压缩机和一台活塞压缩机，主要给转炉、中轧和热带三家生产单位供气。
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