This paper introduces the design and development of a medical ultrasonic irrigative and therapeutic apparatus.
目的：研制一种节水、高效的超声波冲洗治疗仪器。
The supply and the using efficiency of the IWC restrict the growth of field irrigative scale and affects the security of food provision.
农田水利基础设施的供应及使用效率制约着农田灌溉规模的增长，影响着粮食供给的安全性。
The supply and the using efficiency of the IWC restrict the growth of field irrigative scale and affects the security of food provision.
农田水利基础设施的供应及使用效率制约着农田灌溉规模的增长，影响着粮食供给的安全性。
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