Through the past decades, people have done a great deal of experiment research on single jet and have got abundant datum, while have not done much on the flow characteristic of multiple jets.

在过去的几十年中，人们对单股射流的流动作了大量的实验研究，取得了丰富的资料，而对多股射流流动特性的研究确不多见。

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Based on the characteristic of GM (1, 1) model, this paper presents a new modelling method for the model through adding a datum to the beginning of raw data sequence.

根据GM(1,1)模型的特点，通过在原始数据序列前加一个数的方式，提出了建立GM(1,1)模型的一种新方法。

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After further analysis of obtained datum, the distribution of flow streamlines and related characteristic charts in the interior f...

通过对试验数据进行进一步的分析，得到了其内部流场的流线分布及相关性能曲线。

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