Sengupta realized the balloon-within-a-balloon structure could help him tackle the drug delivery challenge.
森古普塔马上意识到，这种气球套气球的结构也许可以帮助他解决给药的难题。
Balloon delivery of application method is simple to learn, the use of safety, it must be to go through formal training, the study of theory and practice of teaching, can we correctly grasp.
气囊助产施术方法简便易学，使用安全，但必须要经过正规的培训，进行理论学习与示教实习，才能正确掌握。
In operation, the control unit selectively actuates the fluid delivery system to operate in a fluid injection mode or in a balloon inflation mode.
在工作时，控制单元选择地致动流体输送系统以流体注射模式或球囊充胀模式运行。
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