平夹式扩孔钻头 flat head: 扁头; 平封头,平盖reaming: (用)铰(刀扩)孔; 铰除; 铰孔加工; 铰孔修润; 铰削; 绞孔; 绞削; 扩帮; 扩孔,铰孔; 扩眼;铰孔; 清除毛边; 捅风口; 挖穴法; 纹孔; 一种球根繁殖法bolted flat head: 螺栓连接式封头; 螺栓连接式平封头; 螺栓连接式平盖brass screw with flat head: 平头铜螺钉ceramic flat head: 陶瓷扁平磁头下载手机词典可随时随地查词查翻译