retractedadj.可伸缩的动词retract的过去式和过去分词.
retractv.缩回;收回;撤销
retractable launching box收放式发射器
retractable overhead bins收放式头顶行李架
retractor dorsalis muscle背鳍缩肌(动)
retraction ring of uterus子宫收缩环
retractable undercarriage伸缩起落架
retractable finger pickup伸缩指式捡拾器
retractable landing light收放式着陆灯
retractable fender system伸缩式防撞装置
retractable wrapper rolls伸缩式助卷机辊