subminiature tube英美网络 超小型电子管电力双语例句Eggs boil by the heat of the spring. filamentary subminiature tube温泉的热水可以煮鸡蛋。超小型直热式电子管The research procedure of a subminiature separating swirl tube was described.论述了一种超小型旋流管的研究过程。