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1·Some useful conclusions were reached.

得出了一些有用的结论。

2·Some useful conclusions have been obtained.

得出了一些有益的结论。

3·Some useful conclusions have also been obtained.

获得了一些有用的结论。

4·As a result, some useful conclusions have been made.

文中给出了某些有用的结论。

5·Through computation of axisymmetric shells, some useful conclusions are drawn.

计算了轴对称壳获得了一些有益的结论。

6·Through the computation and analysis, some useful conclusions have been ar-rived.

通过理论分析与实际试算得出了一些有益的结论。

7·Otherwise, this paper provides some useful conclusions on the dragging parameter.

并对拖曳系统某些参数进行了分析，得出了有益的结论。

8·Some useful conclusions have been obtained according to the analyses and calculations.

根据分析与计算结果还得到了一些有价值的结论。

9·Some significant and useful conclusions are obtained by analysing many actual examples.

通过实例分析得出了一些有意义的结论。

10·State feedback control of the pump is also made in this paper and some useful conclusions are obtained.

本文还对该泵的状态反馈控制方法进行了研究，获得一些有益的结论。