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- safety pillar against water-inrush 防水煤柱
- safety pillar under water-bodies 防水煤巖柱
- APPLICATION OF SPLIT TUBE IN CONTROLLED BLASTING FOR STOPING OF A SAFETY PILLAR 劈裂管在保安礦柱回采控制爆破中的應用
- Study on safety pillar for fault protection in strip mining under building 建筑物下條帶開(kāi)采斷層保護煤柱留設研究
- No safety pillars shall be mined without authorization and no dangerous methods, such as water bursting, blasting and breaking through roadways, which may threaten the production safety of adjacent coal mines shall be adopted. 采礦作業(yè)不得擅自開(kāi)采保安煤柱，不得采用可能危及相鄰煤礦生產(chǎn)安全的決水、爆破、貫通巷道等危險方法。
- No safety pillars shall be mined without authorization and no dangerous methods,such as water bursting,blasting and breaking through roadways,which may threaten the production safety of adjacent coal mines shall be adopted. 采礦作業(yè)不得擅自開(kāi)采保安煤柱，不得采用可能危及相鄰煤礦生產(chǎn)安全的決水、爆破、貫通巷道等危險方法。
- It seemed an eternity before news of his safety reached her. 他平安的消息到達她那里之前，那段時(shí)間似乎是無(wú)限漫長(cháng)的。
- Thanks to I had tied then the safety belt. 幸虧我當時(shí)系上了安全帶。
- The ship came about and headed back for safety. 這只船掉過(guò)頭往回開(kāi)到安全地帶去。
- I don't wonder you were anxious about their safety. 你為他們的安全著(zhù)急，我是不奇怪的。
- In the end they reached a place of safety. 他們終于到達了一個(gè)安全的地方。
- When do the new safety rules come into force? 新的安全規則何時(shí)生效?
- The safety precautions are totally inadequate. 這些安全措施完全不合格。
- I'm worried sick about my son's safety. 我十分擔心我兒子的安全。
- If I lose my job, I've got no safety net. 我丟掉這份工作就無(wú)計可施了。
- We're all concerned for her safety. 我們都為她的安全擔憂(yōu)。
- The new aircraft is undergoing safety tests. 這種新飛機正在接受安全性能檢驗。
- His long absence raised fears about his safety. 他長(cháng)期不在引起了大家對他的安全的擔心。
- The new safety regulations are now in force. 新的安全規則現已生效。
- Feasibility study on recovery of safety pillar in process of mining flat-grade thin orebody 緩傾斜薄礦體保安礦柱回收的可行性研究
