不等厚板对接焊缝
butt weld with unequal thickness plates
电力通信接入网
power communication access network
电力牵引用内包式钢铝接触线
inner cladding type of St-Al contact wires for electric traction
电力牵引接触网
electric traction network
电力交流接地网
electric power grounding network
电离辐射接近指示器
ionizing radiation proximity indicator
电连接器接点
electrical connector joint
电缆接线端子
electric cable connection terminal
电连接线夹
connector
electric connecting clamp