短語(yǔ)詞組短語(yǔ)square -head bolt 方頭螺栓square generally head bolt 方頭螺栓black square head bolt 粗制方頭螺栓flattend square head bolt 平頂方頭螺栓flattened square head bolt 平頂方頭螺栓;平頂方頭螺栓英語(yǔ)square head bolt west bank 方頭螺栓square head bolt with collar 帶凸緣方頭螺栓flattened d square head bolt 平頂方頭螺栓 返回 square head bolt