coal drawing的意思|示意

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coal drawing相关短语

1、 coal drawing interval 放煤步距

2、 blast mining top-coal drawing 炮采放顶煤

3、 top-coal drawing 放顶煤

4、 top coal drawing 放顶煤

5、 roof coal drawing 放顶煤

6、 coal drawing sequence 放顶煤顺序

7、 top-coal drawing law 放煤规律

8、 top coal drawing rate 顶煤放出率

9、 light top-coal drawing 轻型放顶煤