定程杆气缸(Stopper Cylinder) AST 系列 按90度可转动变更4个方向 内设有容易保全的 Shock Absorber 单动、双动、双动（内置弹簧) DIRECT,ROLLER的高强性化 可...
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The invented stopper is composed of slide oil cylinder, piston rod units and outer housing.
一种铁路全液压制动顶，由滑动油缸，活塞杆组件，及外壳组成。
The utility model has the technical proposal that a cylinder is fixed in the inner part of a bottle cap top, and a bottle stopper sleeve is fixed on the outer surface of the cylinder.
本实用新型技术方案：瓶盖顶的里部固定有一圆柱，沿圆柱的外表面固定有瓶塞套。
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