The content of the research on changing the high shaft into a main ore-pass in Yong-Sha-Ba mine has three parts.

用沙坝矿高大副井改主溜井的研究内容主要分为三个部分：溜井放矿规律研究与振动出矿及相关技术的应用研究；

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Yong Zhou Ba Ji is the masterpiece of LIU Zong-yuan's landscape essay.

《永州八记》是柳宗元山水游记的代表作。

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