词汇	hexagon bolt with collar
释义	hexagon bolt with collar 六角头凸缘螺栓
随便看	architecture distortion architecture drafting architecture drainage architecture drawing architecture drawing course architecture ecological ideology architecture economy architecture edge space architecture education architecture-education architecture efficiency architecture electric architecture electrical design architecture electric design specification architecture elevation architecture energy conservation architecture energy consumption architecture energy resources architecture energy-saving Architecture energy-saving architecture energy supply architecture engineering architecture engineering construction architecture engineering specialized subject architecture ensemble