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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 invented stopper is composed of slide oil cylinder, piston rod units and outer housing.
youdao
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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 invented stopper is composed of slide oil cylinder, piston rod units and outer housing.
youdao