The design, principal, process and performance of the pump jet were presented, and a prototype pump was designed and manufactured in the laboratory.
详细分析和介绍了泵的结构及工作原理，设计制作了实验用样机，并进行了性能测试。
The design, principal, process and performance of the pump jet were presented, and a prototype pump was designed and manufactured in the laboratory.
详细分析和介绍了泵的结构及工作原理，设计制作了实验用样机，并进行了性能测试。
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