Distribution and transfusion of the geostatic pressure variate in company with mining space in underground mining.
地下开采中地压分布与转移随开采空间变动而变动,同
开采顺序会带来
同
围岩稳定性。
Distribution and transfusion of the geostatic pressure variate in company with mining space in underground mining.
地下开采中地压分布与转移随开采空间变动而变动,同
开采顺序会带来
同
围岩稳定性。
The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.
人造地球卫星由于大气阻力和地球引力场等因素
摄动,其形状和近地点位置将
断改变。
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