对阀盘、耳轴活塞杆头的染料渗透剂测试。
Dye-penetrant testing of the disc trunnions and piston rod heads.
为降低或消除这两种减振器噪声，提出了对减振器内部结构如活塞阀系统、底阀系统以及活塞杆等的设计要求。
To avoid these two kinds of noise, the paper gived some requirements to the internal structure design of shock absorber, such as piston valve system, bottom valve system, piston rod etc.
阀杆断裂了把液压马达吊上岸去修理制作十个活塞销。
Crane the hydraulic motor ashore for Fabricate ten gudgeon pins.
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