... mechanical wood-pulp paper 机械木浆纸 mechanical wrench 机械扳手 mechanically ashed producer 机械除灰发生炉 ...
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mechanical l wrench 机械扳手
mechanical transport depot wrench 机动扳手
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This mechanical seal is produced by the mating and slight crushing of the threads when a wrench is applied to tighten the fittings.
当用扳手上紧配件时，这种机械密封会在螺纹配合和轻微的变形来生成密封效果。
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