求翻译：一般而言，井巷岩石普氏硬度系数超过10的掘进作业，采用常规的风动凿岩机，很难实现快速、高效施工。是什么意思？

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In general, dajing lane rock Platts hardness factor of more than 10 Boring operations, using conventional pneumatic drilling machine, it is difficult to achieve rapid, efficient construction.

Generally speaking, the well lane rock Pope coefficient of hardness surpasses 10 tunneling works, uses conventional the compressed-air driven rock drill, very difficult to realize, the highly effective construction fast.

In General, the underground rock excavation of General hardness coefficient for more than 10 jobs with conventional pneumatic rock drills, it is difficult to achieve fast, efficient construction.