二次衬砌
- 网络secondary lining; second lining
二次衬砌二次衬砌
secondary lining
译网情深 - 打印文章 - ... 初期支护 primary support 二次衬砌 secondary lining 隔离层 isolation layer ...
second lining
二次衬砌,secondary... ... ) secondary lining 二次衬砌 ) second lining 二次衬砌 ) quadratic lining cement 二次衬砌砼 ...