Karman vortex street was observed in the wake of a rough Mat plate at M=2.2.The supersonic vortex flow was investigated by optical methods.是什么意思_Karman vortex street was observed in the wake of a rough Mat plate at M=2.2.The supersonic vortex flow was investigated by optical methods.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句