Self Help管壳类型
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-supporting grating自持光栅
self contained instrument不需辅助设备的仪表
self-powered destructor自供电自炸装置
self- defending network自防御网络
self-generated pressure自生压力
self-supplying capacity自持力
self-feeding carburetor自吸式汽化器
self-employed education创业教育
self-regulating reactor自调节堆
self-assemble technique分子自组装