[矿业]
mining engineering plan
... 井底车场平面图shaft bottom plan 采掘工程平面图mining engineering plan 主要巷道平面图main workings plan ...
基于544个网页-相关网页
... 未采的矿区maiden field 采掘工程平面图map of mine working 海上钻井marine drilling ...
基于78个网页-相关网页
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mining engineering plan
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mining engineering plan
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