Datetime: 2018-05-15 Views: 495
1. Measurement of tunnel lamps
The installation of tunnel lamps and stents is neat and beautiful, and the measuring process is the key. First of all, whether the actual height of the road sur...
Datetime: 2018-05-15 Views: 660
What are the "white holes" and "black holes" of tunnel lights? In a simple way, people travel through the tunnel, and the visual light fatigue is equal to that you are in a bright face from the tun...
Datetime: 2018-05-15 Views: 4714
1, line positioning: the installation of the construction drawings to install the height of the installation of the height first to determine the installation position, the height of the measuremen...