main trunk line
短語(yǔ)詞組
- national main trunk line 國(guó)道主干線
- main trunk railway line 主要干線
- nationing main trunk line 國(guó)道骨支線
- main starting valve trunk line 主要干線管路
- Singapore -Lasa main trunk line 新加坡
- main trunk of hydraulic line 輸水線路總干 返回 main trunk line