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Terms for subject Engineering geology containing Crown | all forms | exact matches only
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crown bit金刚石钻头
crown bit环状钻头
crown block钻井架顶部滑轮组
crown drill顶钻
crown hole地下巷道冒顶洞
crown of levee堤顶
diamond crown bit鑽石鑽頭
diamond crown bit金刚石钻头
drill-crown loss钻头损耗