electric equipment under ground井下用电设备

equipment of ground receiving地面接收设施

Equipment t ground interactions地面设备交互

Equipment ground interactions地面设备交互

equipment ground wire设备接地

lifting equipment on the ground地面举升设备

equipment ground-connection equipotential bonding设备接地等电位

distance-measuring equipment ground beacon测距设备地面信标

ground equipment地面设备