crank hammer with fixed cylinder 定缸曲柄气锤
crank hammer with sliding cylinder 滑缸曲柄气锤
hammer r cylinder 汽锤汽缸
The author described philosophy, causes and precautions for water hammer appearance in steam piping, drum, feedwater piping, economizer, drum draining tube, sub-steam cylinder etc.
叙述了蒸汽管道、锅筒、给水管道、省煤器。锅筒放水管、分汽缸等发生水冲击的基本原理，产生原因和预防措施。
After PTFE Glyd ring was used in piston seals of hydraulic cylinder of electro-hydraulic hammer, the gas pressure rose because oil entered into gas chamber.
电液锤液气缸活塞密封采用由PTFE制造的格莱圈密封，在使用中液压油会窜入气腔，导致气体压力升高。
The hammer core is lifted to a certain height by an oil cylinder or other lifting device then falling freely.
其锤芯由提升油缸或其他提升装置提升到一定高度，然后自由落下。
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