instructive 专八

1.it is instructive to compare the two projects.

比较两个项目很有启发性。

2.the study makes melancholy if instructive reading.

该研究报告读来让人增长知识，却也令人沮丧。

3.The calculations agree well with experimental results, which indicates that the model is instructive on the optimization of the dimension of inertance tube in Stirling type pulse tube cooler. 3.

这表明该方法对斯脉管制冷机中惯性管尺寸选取具有重要指导意义。