【单选题】【消耗次数:1】
滚珠丝杠螺母副结构类型有两类:外循环插管式和()
内循环插管式
外循环反向器式
内、外双循环
内循环反向器式
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相关题目
【单选题】 滚珠丝杠螺母副结构类型有两类:外循环插管式和()。
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②  外循环反向器式
③  内、外双循环
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