stress-relax entry

• 卸压巷

stress-relax entry的用法和样例：

例句

1. The in-seam distressing entry layout is combined with concussion blasting technique,so that the tailentry in soft rocks can be effectively maintained.
   首次提出了应用本煤层布置卸压巷并结合松动爆破技术解决沿空软岩巷道有效维护的难题。