“二次支护”的概念、定义、翻译、参考文献-科学参考

单词	二次支护
释义	二次支护 Encyclopedia 工学巷道支护释 secondary support二次支护井巷掘进中采用分次支护时，在一次支护完成后再次施工的支护。又称永久支护、后期支护。理学地下工程支护释 secondary support二次支护在初期支护稳定后完成的提供安全储备或承载后期围岩压力的支护形式。
随便看	operator space operator spectrum operator splitting operator splitting method operator-stable operator structure operator theorem operator-theoretic method operator theory operator topology operator transform operator-valued coefficient operator-valued distribution operator-valued function operator variable operator with a trace operator with continuous spectrum operator with dense domain operator with the boundary condition Opera Troupe Opera Troupe Found by Jiang Chun of Qing Dynasty opera troupe found by Pan Yunduan of Ming Dynasty opera troupe found by Qian Dai of Ming Dynasty opera troupe found by Ruan Dacheng of Ming Dynasty opera troupe found by Sheng Chunkui of Qing Dynasty

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