液压升降机中使用的液压油缸，其组成部分通常有五部分：活塞和活塞杆、缸筒和缸盖、缓冲装置、密封装置、排气装置。
The use of hydraulic cylinder in hydraulic elevator, the part usually has five parts: piston and piston rod, cylinder and cylinder head, buffer device, sealing device and exhaust device.
某飞机起落架缓冲柱塞在补压时发生突然断裂，同时弹出一小块浮动活塞碎片。
An undercarriage buffer plunger in an airplane suddenly fractured during the process of reinforcing pressure, and a fragment of a floating piston was thrown out.
结果表明，此缓冲系统有效地控制了稳定阶段活塞速度反弹，并对活塞速度变化有足够的自适应能力。
Experimental and simulation results prove that this cushion system can solve this problem effectively and has enough automatic adaptation ability for piston speed change.
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