While making an efficiency test on an engine, certain precautions should be observed. 对发动机进行效率试验时，必须遵守一定的预防措施。
The empiric formulas for calculating slot film cooling effectiveness were derived from the test data according to the turbulence-mixing model. 根据湍流混合模型及气膜效率试验数据归纳了计算缝槽气膜冷却气膜效率的经验关系式。
