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The wear ring is set for minimum clearance from gate for full rated back pressure.
磨损环用来最大限度缩小与闸板的间隙,以承受完全的额定压力.
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只有在速度相同时，同步器环才能通过操作套筒回转。
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Disassemble back-up ring and mount only in the case of replacement.
仅在更换时分解支撑环和底座。
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Finite Element Analysis of Stress and Contact Pressure of Rubber O-sealing Ring with Back-up Ring
O形橡胶密封圈配合挡圈密封的应力与接触压力有限元分析
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9、
If I were you I would simply ring your friend's bell and ask for your bike back.
如果我是你，我就会直接去按你朋友的门铃，把自行车要回来。
《柯林斯高阶英汉双解学习词典》
10、
A metal ring that moves freely back and forth on a rope, rod, or spar.
滑环在一根绳 、 杆子或圆材上可以自由来回移动的金属环.
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She leaps in one bound onto her pony's back for a speedy canter around the ring.
她纵身一跃骑上了马背，绕着场地策马慢跑。
《柯林斯高阶英汉双解学习词典》
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