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.
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。
What's more, piston rubber for mud pumps, packing for plunger pumps and various kinds of valve rubber can rival with the international similar products in performance and service life.
公司生产泥浆泵活塞胶皮、柱塞泵盘根、各种阀胶皮，其产品性能及使用寿命均达到国外同类产品先进水平。
A seal between the piston and the interior of the plunger prevents air or fluid from passing by the piston into the plunger.
在活塞和柱塞内部之间的密封件可防止空气或液体利用活塞而进入柱塞。
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