本文根据相似理论，提供了一种用水模拟技术进行无涡流直喷式柴油机混合气形成的研究方法。
According to the principle of similarity, a water model is used for investigation of the formation of mixing in the quiescent direct injection diesel engine.
根据相似理论的基本原理，本文导出了室内送风气流应遵循的准则方程。
In this paper, a norm equation that indoor supply airflow should be followed is deduced from the basic principles of similitude theory.
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