original: https://www.mafengwo.cn/upload4/061019/I061019102543_2625_2.jpg
位于” 南锣鼓巷” 的”老五”餐厅老板于上世纪八十年代初的毕业于英国的博士论文. 老板人称”老五”, 谁要是能把这个题目用中文讲清楚了, 老板送一杯酒.
“A study of the mean flow structure of circular and rectangular exit turbulent jets initially at a small incidence angle to a uniform mainstream”