掩护式支架是由 ______ 、 ______ 、 ______ 和 ______ 四个主要部件组成。 -题库考试答案搜索网

掩护式支架是由、、和四个主要部件组成。

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2021-09-02 15:22

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托梁 @#@掩护梁 @#@底座 @#@支柱

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标签：联大河南理工大学矿山测量学

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