基本解释双头螺栓英汉例句双语例句Double-screw bolt & Iron plug with screw thread & Plastic cap.双头螺钉、螺纹塞和塑料盖冒。double-screw bolt更多例句词组短语短语Dual -head double-screw bolt 双头螺柱double-screw bolt更多词组专业释义交通运输工程双头螺栓