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
法对斯特林型脉管制冷机
惯性管尺寸的选取具有

导意义。
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典英语美文背诵100篇
济学人(汇总)
济学人-商业 While hunter-gatherer children learnt from observation and imitation in mixed-age playgroups, researchers said that western " instructive teaching" , where pupils are asked to sit still, may contribute to conditions such as attention deficit hyperactivity disorder.
研究人员表示,狩猎采集社会的孩子们在混龄游戏小组中通过观察和模仿来学习,而西方的 “指导性教学”,即要求学生坐着不动,可能会导致注
缺陷多动障碍等状况。
济学人-商业