“shaft drilling”的概念、定义、翻译、参考文献-科学参考

单词	shaft drilling
释义	shaft drilling Encyclopedia 工学竖井施工方案释 shaft drilling竖井凿岩竖井施工中，在井筒围岩上钻凿炮孔的作业。是竖井掘进中的一项主要工序，约占整个掘进循环时间的20%～30%。
随便看	symmetrization symmetrization method symmetrization operator symmetrization principle symmetrized symmetrized multilinear mapping symmetrized polynomial symmetrized product symmetrized representation symmetrized stochastic integral symmetrized tensor symmetrizer symmetroid symmetry symmetry-adapted coefficient symmetry adapted linear combination symmetry adapted linear combination, SALC symmetry adapted molecular orbital symmetry-adapted wave function symmetry analysis symmetry and algebra in conformal field theory symmetry and asymmetry symmetry and balance symmetry and conserved current symmetry and conserved quantity

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