... 掘进工作面支护 driving face support 掘进护盾 mining shield 掘进机 development machine ...
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shield mining 掩护支架采煤法
shield mining method 盾盖式开采法
shield coal mining method [矿业] 掩护支架采煤法
rill flexible shield mining method 伪斜柔性掩护支架采煤法
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They point to a report from Deloitte that contends that mining helped shield Australia from recession last year, when the economies of most rich countries contracted.
ECONOMIST: A government proposal exposes a rich seam of discord
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