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strong roof
meaning in English
坚固顶板
Examples
Inquiring into
strong roof
control in luling mine
芦岭矿坚硬难冒落顶板管理探讨
Manage of rock burst in mine with great mining depth partial extraction and
strong roof
face
煤层采场顶板活动变化及综采面支护强度初探
Related Words
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make strong
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strong room, vault
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