双头 [shuāng tóu]

• double-end
• 短语:
  • 双头泵 bull pump;
  • 双头畸胎 dicranus; craniodidymus; bicephalus; dicephalus;
  • 双头假捻变形 duo-twist texturing;
  • 双头接点 twin contact;
  • 双头垄断 duopoly （即市场某一商品由两家卖主垄断）;
  • 双头螺栓 stud;
  • 双头螺丝钉 dowel screw;
  • 双头螺纹 double threaded (screw); stud bolt;
  • 双头卡规 double-end snap gauge;
  • 双头式 bullhead;
  • 双头镗床 double-ended boring machine;
  • 双头蜗杆 double-thread worm;
  • 双头针 double-ended needle