“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	Global Education Monitoring Report Global employee and laborrelations global environment global environmental change Global Environmental Change and Food Systems global environmental change and health global environmental change map Global Environmental Institute Global Environmental Monitoring System Global Environmental Monitoring System (GEMS) Global Environment Fund Global Environment Outlook global error global estimate global ethic global existence global extremum global fault global field global finite element equation Global Flux Network global Fock state Global Foundries global gauge transformation global geodetic observing system

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