镀锌圆头螺栓 meaning in Chinese

galvanized mushroom head bolt

Fixed railway equipment . material for telecommunication and signaling overhead lines . galvanized round head bolts
铁路固定设备.通讯和信号装置架空线路用器材.镀锌圆头螺栓
Fixed railway installations . equipment for overhead telecommunication and signalling lines . galvanized round head bolts , finish g
铁路固定设备.通讯和信令装置架空线路用器材.镀锌圆头螺栓.光洁度g