... cylinder drying machine 筒式干燥机 cylinder escape valve 汽缸保安阀 cylinder flat-bed machine 凸版平台印刷机 ...
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cylinder r escape valve 汽缸保安阀
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A needle valve with a threaded spindle is unscrewed to open a passage for the liquid to escape to the reservoir from the cylinder when the jack is required to be lowered.
当千斤顶需要下降时，一个带锭子的针型阀门被放松来使液体通过圆筒流回储备液箱。
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