For the Chenjiachong tunnel rebuilding project, the junction and seepage of the fresh and old concrete are tested by using the ground penetrating radar and microwave humidity equipment.
结合既有陈家冲隧道改建工程，采用探地雷达和微波湿度测定仪检测了新旧混凝土接缝处结合状态和渗漏情况。
2
Ground the water heater by connecting a grounding wire from the electrical service ground terminal to the green grounding screw in the junction box of the water heater.
通过将电气部件上的接地端子连接到热水器接线盒里绿色接地螺丝上，实现热水器的接地。
3
Optimization method is adopted to design a cabin in which a junction is fixed in the course of adding the ground pressure refueling system to an aircraft.