短語詞組短語combination self -fastening untressed bolt back-ling 組郃自固型無受力螺栓襯板side fastening bolt 側(cè)緊螺栓top fastening bolt 頂螺栓handle lever fastening bolt 手柄桿螺栓fastening screw trip bolt 緊固螺釘binding bolt fastening bolt 緊固螺栓bottom m fastening bolt 底螺栓shoe fastening bolt 瓦栓bottom fastening bolt 底螺栓 返回 fastening bolt