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.
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。
In the same geological formation, the similarity in distribution is observed for both shallow and deep layers.
而岩溶分布的层位及构造部位，在同一地质单元中的浅层和深层区具有类似性。
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