焦家矿区开拓斜坡道与平巷测量贯通技术 - 久久建筑网 关键词：矿区，斜坡道，平巷 ， 测量，贯通 [gap=568]Keywords: mining areas, ramp, entry, measurement, and another
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sinkholes in coal mining areas 采煤沉陷区
coal-mining areas 煤炭矿区
mining areas of country planning 国家规划矿区
near mining areas 近区开采
old mining areas 老矿区
coal mining areas 煤炭矿区经济
green mining areas 绿色矿区
So large inclined angle coal seam are entered into the field of vision many mining areas use asymmetric metal shed stent, but it can not be achieved satisfactory results so studying the destroy mechanism of steep seam mining gateway.
但许多矿区采用非对称式金属棚式支架支护不能取得令人满意的效果。
参考来源 - 长沟峪煤矿急倾斜煤层锚杆支护技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The canaries in coal mining areas may be an animal threatened by climate change.
煤矿区的金丝雀就可能是一种正受气候变化威胁的动物。
Note: Output of natural gas since2003 excludes that of gas mining areas in Sichuan.
注：从2003年起天然气产量不包括四川省境内气矿的产量。
Deepen the culture of responsibility-building, to maintain harmonious and stable mining areas.
深化责任文化建设，全力维护矿区和谐稳定。
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