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词汇
roof weighting step
释义
roof weighting step
基本
例句
来压步距
The length of the first coalface in a mining-district controls the distances of first weighting and periodic weighting of the main roof.
在采区范围内首采工作面的长度控制着老顶的初次来压步距和周期来压步距。
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更新时间：2026/10/3 6:36:19