tunnel portal
短语词组
- tunnel branch portal in sandy 隧洞掛口
- orthonormal tunnel portal 正洞門
- facilities of tunnel portal 隧道洞口設施
- equipment of tunnel portal 隧道洞口設施
- tunnel portal section 東津水電站
- wing wall tunnel portal 翼牆式洞門;詳細繙譯
- tunnel portal frame 洞門框
- bench tunnel portal 台堦式洞門
- tunnel portal area 隧道入口範圍 返回 tunnel portal