为保证施工顺利进行，且提高安全性，对正反导井及扩挖系统进行了多项技术改进，提高了安全系数。
The some techniques of guide shaft and expansion excavation are improved for assure the successful construction and raise the safety coefficient.
机械化和更加严格的监管使得煤矿安全系数提高了很多。
Mechanization and stricter supervision have greatly improved mine safety.
“机械化和更加严格的监管使得煤矿安全系数提高了很多。只要你打起精神，集中120%的注意力，并按照安全规范作业的话，一般不会有问题的。”他给我们这么说。
"Mechanization and stricter supervision have greatly improved mine safety. As long as you pay 120 percent attention and follow safety instructions, you will be OK," he says.
应用推荐