... expansion sleeve bolt 胀壳式锚杆 expansion shell bolt 涨壳式顶板锚杆 ; 胀壳式锚杆 Expansion Anchor Bolt 膨胀螺栓 ...
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... shell 爆破筒 shell bolt 涨壳式顶板锚杆 shelly ground 贝壳石灰岩地层 ...
基于64个网页-相关网页
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