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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.
youdao
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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.
youdao