supporting roadway是什么意思 supporting roadway怎么读
supporting roadway的用法和样例
- A new anchor applied to the stoping tunnel supporting of coal mine is recommended.
介绍了一种用于煤矿回采巷道支护的新型锚杆。 - The present method could make the supporting of roadway surrounding rock safe and economic.
按最优恒阻支护计算方法设计巷道支护，可以达到经济且安全的最佳支护效果。
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