medium hard meaning in English
中等硬度的
中硬度
Examples
- Soft - medium hard rock formation
软-中硬岩层 - Medium hard to hard rock
中硬-较硬岩 - The safe coal - miming technology for shotfiring roofcoal caving faces in medium hard coal - beds
中硬煤层炮采放顶煤的安全开采技术 - Medium hard steel
中等硬度钢 - Application of medium and deep hole blasting technology in medium hard rock tunnel boring at haizi coalmine
中深孔爆破在海孜煤矿中硬岩巷道掘进中的应用