It also finds that efflux parts can be easily damaged because of the small water-carrying section area in the nozzle,therefore,the section area needs to be increased.

• 与此同时,也发现了一些问题,如由于喷嘴过流断面较小等原因导致的射流元件易损坏的问题,所以需要增大喷嘴过流断面。