In this paper, the sources of error in no-load engine power testing are analyzed. Two methods to reduce the errors are put forward, based on the investigation of actual test data.

分析了无外载测功法中的主要误差来源，在对实测数据分析研究的基础上，提出了两种提高精度的方法。

youdao

If there were no mechanism to allow temporary constraint suspension, an error would be raised every time you tried to load a record into the child table.

如果没有允许暂止暂时性条件约束的机制，则每次尝试将资料录载入到子资料表时，就会引发错误。

youdao