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保安矿柱
释义
保安矿柱
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回采预留矿柱
释
safety pillar
保安矿柱
为保护地表重要设施、地貌和主要井巷,避免其因井下开采影响而产生破坏,或分隔含水层及破碎带、矿段或矿块等目的而留设不采或暂时不采的部分矿体。
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period module
period-n-tupling bifurcation
period of a circulating decimal
period of a class
period of a continued fraction
period of a decimal fraction
period of a differential
period of a function
period of a group
period of alternating current
period of an element
period of an ergodic class
period of an oscillation
period of a semigroup
period of a wave
period of coefficients
period of dormancy
period of intercalary month
period of light variation
period of limitation of administrative litigation
period of military government
period of moon's node
Period of Political Instruction
Period of Political Instruction Constitution of Republic of China
period of pseudorandom numbers
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