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钢体滑触线是起重配件的一种。
Steel body sliding contact line is a kind of lifting accessories.
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导绳器是起重配件的一种。
Guide rope hoisting device is an accessory.
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齿轴是起重配件的一种。
Gear shaft is a kind of lifting accessories.
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齿轴是起重配件的一种。
Gear shaft is a kind of lifting accessories.
youdao