selfcheckn.自校验
selfn.自己;本性;自我pron.我自己;你自己;他或她自己adj.始终如一的;同一类型的;性质不变的v.近亲繁殖;自花授粉
self-centering wheel自动定心轮
self-loading scraper自装铲运机
self-validating code自确认码
self-rectifying tube自整流(X线)管
self-excited machine自励电机
self - select course自主选项课
self-check programme自检程序
self-powered scraper自行式铲运机
self-assembled layer自组装膜
self-crowding factor自集因子