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friction spark
meaning in English
摩擦火花
Examples
Testing method and judging rule of safety to
friction spark
of metallic material for coal mine
煤矿用金属材料摩擦火花安全性试验方法和判定规则
Related Words
friction knob
friction constant
friction product
friction press
friction rubs
surface friction
incidental friction
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sticking friction
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friction speed calender
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