“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	efficiency algorithm efficiency analysis efficiency-balanced efficiency-balanced block design efficiency characteristics efficiency coefficient method efficiency cost efficiency droop efficiency droop effect efficiency evaluation of merger and acquisition efficiency factor efficiency of an estimate efficiency of a statistical procedure efficiency of canalsystem flow efficiency of cascade efficiency of concentration efficiency of educational management efficiency of electrical injection efficiency of estimate efficiency of exploitation and utilization efficiency of generator efficiency of grafting efficiency of grafting; grafting efficiency efficiency of health care service efficiency of heat engine

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。