Along with the continuous increase of coalmine's mechanization extent, the problem of the dust-control on the comprehensive mechanized coal mining faces is getting more and more obvious.
随着煤矿机械化程度的不断提高，煤矿井下综掘工作面的粉尘防治问题日渐突出。
As the higher ability of coal mechanization, to some extent, the ventilation technology has been improved.
随着采煤机械化能力的提高，通风技术也在一定程度上进行了一些改进。
As the higher ability of coal mechanization, to some extent, the ventilation technology has been improved.
随着采煤机械化能力的提高，通风技术也在一定程度上进行了一些改进。
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