The utility model relates to tunnelclass, particularly a piling base structure applied to the construction of immersed tube tunnels.
本实用新型涉及隧道类，特别涉及一种应用在沉管隧道工程中的桩基础结构。
2
It is the only spec of any class I can think of that actually penalizes you for not tunnel visioning.
它是唯一规格的任何类别我能想到的，实际上惩罚你不隧道远景。
3
Pressurizing, continuous and transonic wind tunnel is the first one in our country, and it is the world ' s first class tremendous high - speed aerofoil wind.