这些修改是由无在美国泵，发现原设计将无法正常工作负载测试结果提示，西屋电气公司说。
The modifications were prompted by results of a no-load test of the pump in the us that showed the original design wouldn't work correctly Westinghouse said.
与现有技术相比，本发明使燃料电池测试用负载大小可自由控制，无短路故障，无火花，安全可靠。
Compared with the prior art, the method can automatically control the size of load for the fuel cell test, has no fault of short circuit and no spark, and is safe and reliable.
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