The question in process of loose upper leather dry filling were described.
对在实施松面革干填充过程中常遇到的问题进行了论述。
The successful application of the dry filling system in Donggouba Gold Mine is described.
叙述干式充填系统在东沟坝金矿的成功应用。
The successful application of the dry filling system in Donggouba Gold Mine is described.
叙述干式充填系统在东沟坝金矿的成功应用。
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