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wangdongcui

煤矸石是指煤矿在建井、开拓掘进、采煤和煤炭洗选过程中排出的含炭岩石，是煤矿建设、生产过程中的废弃物。

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完成本项翻译奖励：10译点 | -> | 字数:49字/词 | 阅读数: 1263

提交时间:2008/7/29 11:49:00

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小棉鞋

Coal gangue refers to the worthless coal-bearing rock picked out in the processes of shaft-building,cutting,tunneling,mining or washing etc,. It is castoff during the coal mine construction and production.

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2008/7/29 15:11:00

突然爱吃鱼

2008/7/29 13:15:00

gangue is a kind of ore including carbon element produced when buliding collieries, digging, mining and coal selecting. It is a waste from constructing collieries and coal producing.

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