Within the error rang allowed, adopt simple and easy method to automatically prolong middle lineoftunnel in order to reduce the influence to construction.
在误差允许范围内，采用简易方法自行延长巷道中腰线，以减少施工影响。
2
And in London they deployed sensors to monitor displacement, temperature and humidity in a tunnel on the Jubilee Lineof the Underground rail system.
在伦敦，他们在地下铁路系统的朱比里线中的一条隧道布置了传感器，用以监测隧道内的排水量，温度和湿度。
3
The digging shield for the second passage of the vehicle tunnel reached the end of the 8.95-kilometer line under the Yangtze yesterday.