“inner advance heading method”的概念、定义、翻译、参考文献-科学参考

单词	inner advance heading method
释义	inner advance heading method Encyclopedia 工学正洞超前导坑法释 inner advance heading method正洞超前导洞法在隧道施工之前的正洞截面上的某个部位先行开挖一个断面较小的导洞以探明正洞前方地质情况，最后将导洞扩挖为隧道正洞的方法。
随便看	nilpotent adjoint orbit nilpotent algebra nilpotent algebraic group nilpotent analytic group nilpotent automaton nilpotent class nilpotent component nilpotent cone nilpotent derivation nilpotent element nilpotent endomorphism nilpotent group nilpotent group of class k nilpotent ideal nilpotent index nilpotent Lie algebra nilpotent Lie group nilpotent Lie group representation nilpotent linear operator nilpotent linear transformation nilpotent matrix nilpotent number nilpotent operator nilpotent orbit nilpotent part

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