increase mining strength
提高开采强度
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The increase in mining height makes the weighting of immediate roof become more violently, which requires that the support strength should increase accordingly.
由于采高加大使基本顶来压更加强烈，支架的支护强度更要加大。
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