The sensor of the device uses lightbridge to be the compensation structure, and this method can get rid of the bad influences caused by ambient conditions.
其传感器内采用光桥式补偿光路，可以克服各种外界因素对测量产生的不利影响。
2
In the middle of the bridge, there is a bright firedamp light like an electric lamp.
在桥的中间，有一盏明亮的沼气灯，像一盏电灯。
3
Only light vehicles are allowed over the old bridge.