automatic retractable system  自动收放系统

cup type retrievable packer  皮碗式可回收封隔器

Deployable and Retractable Flexible Appendage  可伸缩挠性附件

double grip retrievable casing packer  双卡瓦可回收式套管封隔器

dual string retrievable packer  双管可收回封隔器

expendable-retrievable gun  可回收的消毁式射孔器

extendible and retractable dog  伸缩爪

flexible retractable roof  柔性开合屋盖

integrally retractable alternative cutting element  整体不提钻换钻头

lead for retractable pencil  铅芯

multiple-string retrievable packer  多管可收回封隔器

non-retractable fin stabilizer  非收放型鳍板稳定器

non-retractable landing gear  非收放式起落架

non-retractable tail wheel  非收放式尾轮

NON-RETRIEVABLE  不可逆转的

quasi-retractable modules  拟可缩模

repeatedly deployable and retractable  可收放; 反复收放

retraceable set  回溯集

retractable  能缩进的; 伸缩式; 收放式; 可伸缩的; 可缩回的; 可收回; 可伸缩

retractable actuation mechanism  开闭驱动机构