“pilot-heading excavating method”的概念、定义、翻译、参考文献-科学参考

单词	pilot-heading excavating method
释义	pilot-heading excavating method Encyclopedia 工学硐室掘进释 pilot-heading excavating method导硐掘进法硐室岩层不够稳定时，采用先掘进小断面导硐，然后逐次扩大并砌碹的施工方法。
随便看	migration and transformation of tritium in rock,soil and ground water migration and transformation of tritium in surface water migration and transformation of tritium in the environment migration bias index migration conduit migration cost migration current migration dance migration enhanced epitaxy migration for poverty alleviation migration imaging Migration into Northeast China migration mechanism migration of agricultural labor force migration of electronic records migration of oil and gas migration of radionuclide migration of seismic data migration overhead migration pathway migration rate migration season migration sociology migration time migration velocity

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