hydraulic buffer meaning in Chinese

水力缓冲器
液力缓冲器
液压缓冲器
油压缓冲器，耗能型缓冲器

The design of hydraulic buffer for big caliber sniper rifle with adaptive control
大口径狙击步枪自适应液压缓冲器设计
Study on dynamic characteristics of flap valve and hydraulic buffer about two design schems
两种拍门液压缓冲设计方案模型试验研究
Application of safe device of friction winding drum anti - shock tank and hydraulic buffering limited tank - support device
摩擦卷筒式防蹲罐安全装置和液压缓冲限力托罐装置的应用