AC electrical dynamometer is an important device for engine test with easy-controlled testing conditions, easy-collected and managed parameters as well as high measuring precision.

目前，交流电力测功机是进行发动机性能试验的重要装置，其优点在于试验条件容易控制，参数便于采集处理，测量精度较高。

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Researching does not mean listening to someone else's theories, it means actually testing and measuring the truth about how a search engine is behaving.

研究并没有听别人的理论，这意味着实际测试和衡量一个搜索引擎是如何表现的真相。

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