retraction bulb

英 美
  • 回缩球
  • bulb n.球茎；电灯泡；球状物
  • retraction n.退缩；撤消；收回

相关词汇

retracter retract retractor for gall-stone operation Retractable Hook Cable Support System retractor for external auditory canal retracted type obstetric delivery bed retractor and elevetor for metacarpus Retractable double-cut boring cutter Retractable In-Flight Refueling Probe retracting spring-tooth pickup cylinder Retracted nipple associated with childbirth retractable rudder of keel-centerboard yawl
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