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来源:雅诚德英语网
The Mengxing Pb Zn deposit with low ore grade and deep buried is facing the situation of resources exhausted.
勐兴铅锌矿矿石品位低、埋深大,且面临资源匮竭。
The Mengxing Pb Zn deposit with low ore grade and deep buried is facing the situation of resources exhausted.
勐兴铅锌矿矿石品位低、埋深大,且面临资源匮竭。