?接地棒

...er(不锈紧固件) square bolt(方形螺栓) rock bolt(岩石螺栓) flange bolt(法兰螺栓) standard bolt(标准螺栓) earth rod(接地棒) eyebolt(环首螺栓) carriage bolt(车身螺栓) expansion bolt(扩张螺拴) special bolt(特别螺栓) hex head bolt(六角螺栓) stain...

?护土结构

... 土压力 earth retaining structure 护土结构 earth rod 地震 earth tag ...