1) safe advance height
安全段高
2) safe and efficient
安全高效
1.
An article in building a safe and efficient coal mine as an example,the Mine Safety and efficient creation of the foundation conditions,Analysis of the impact on safety of mine construction factors,and these factors made solutions and constructive opinions in the future to build a safe and efficient mine and the research efforts that direction.
以千秋煤矿创建安全高效矿井实践为例,提出了安全高效矿井创建的基础条件,分析了影响安全高效矿井建设的因素,并针对这些因素提出了解决方法和建设性意见,为今后在创建安全高效矿井方面的研究和努力指出了方向。
2.
It is universally acknowledged that the exploitation of the protection layer is a safe and efficient measure that can increase coal\'s depth,raise the rate of gas extraction,prevent outburst and the pressure of impact.
开采保护层是目前国内外公认的提高瓦斯抽采率、防治突出和冲击地压等的一种安全高效措施。
3) safety and high efficiency
安全高效
1.
Research and practice of technology system on safety and high efficiency in Huainan mine area;
淮南矿区安全高效技术体系研究与实践
2.
The system can work with safety and high efficiency .
该系统能在安全高效的基础上运行。
3.
The safety and high efficiency in the thin coal seam is realized.
该矿引进新装备,在开采技术上创新,改进回采工艺,提高单产水平,实现了薄煤层安全高效。
5) high degree of safety
高安全度
补充资料：十报恩 赠段先生 折段字起
【诗文】：
公物外好生涯。火相逢结大砂。女盘桓看大药。牛哮吼戏灵葩。云铺地丹炉赫，子观天碧眼华。有三生君省悟，中无事步烟霞。
【注释】：
【出处】：
公物外好生涯。火相逢结大砂。女盘桓看大药。牛哮吼戏灵葩。云铺地丹炉赫，子观天碧眼华。有三生君省悟，中无事步烟霞。
【注释】：
【出处】：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条