ACS 5000变速驱动系统使得波音公司可以根据每个测试的规程和参数，自由设定可调速度模式或者恒速模式。
The ACS 5000 variable speed drive system enables Boeing to run the fan in adjustable speed mode or at constant speed, depending on the protocols and parameters of each test.
经对系统性能进行模拟评价，并对“恒速”巡航模式进行仿真，表明该系统具有良好的工作性能和工程实用价值。
Finally, the system performance evaluation and "constant speed" cruise simulation indicate that the system has good performance and practical engineering value.
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