研究表明，推进力和稳定比N是影响老隧道变形的主要因素。

The research result shows that advance force and stability ratio N are the main factors controlling …

youdao

研究表明，推进力和稳定比N是影响老隧道变形的主要因素。

The research result shows that advance force and stability ratio N are the main factors controlling …

youdao