通过发动机台架试验，得到了进行天然气发动机燃烧循环变动实验研究的经济样本容量。

Through experiment, we get the economic cycles of the sample size for the research of the cyclic variations of CNG engine.

youdao

通过发动机台架试验，得到了进行天然气发动机燃烧循环变动实验研究的经济样本容量。

Through experiment, we get the economic cycles of the sample size for the research of the cyclic variations of CNG engine.

youdao