countersinker

基本解释

• n.扩埋头孔刀

同根派生

英汉例句

• A tool for making a countersink.
  做螺丝钉孔的工具
• To drive(a screw or bolt) into a countersink.
  将钻或螺栓置入埋头孔
• Orthopaedic instruments.Drills, taps and countersink cutters for use with osteosynthese screws with asymmetrical thread and spherical under-surfaces.
  外科医疗器械.;矫形外科器械
• Keywords countersink diameter;peg;grip;
  钻孔直径;销钉;握着力;
• drill and countersink combination
  尖角钝角两用钻