然后使用这种方法研究了气壁材料、气壁厚度和冷却液流量对推力室再生冷却的影响，获得了比较满意的结果。
Then using this method, influence of gas wall material, gas wall thickness and flow rate of coolant on regenerative cooling of thrust chamber was investigated. The results were satisfactory.
螺旋气道通过气门间隙与缸壁的气流相互作用也产生涡流，因此，涡流数取决于相应气缸中心的螺旋线方位。
Helical port also produces swirl by airflow interaction of valve gap and cylinder wall, so swirl number depends on helical line direction of relevant cylinder center.
目的：观察止喘胶囊对哮喘模型大鼠气道壁胶原、纤维连接蛋白含量及气道壁厚度的影响。
Objective: an observation the effect of ZhiChuan Capsule on deposition of collagen and fibronectin in airway wall in rat with asthma models.
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