A、<span style="font-size:14px;font-family:宋体">湍流流速</span><span style="font-size:14px;font-family:'Times New Roman','serif'">></span><span style="font-size:14px;font-family:宋体">层流流速</span>
B、<span style="font-size:14px;font-family:宋体">流道截面大的为湍流,截面小的为层流</span>
C、<span style="font-size:14px;font-family:宋体">层流的雷诺数</span><span style="font-size:14px;font-family:'Times New Roman','serif'"><</span><span style="font-size:14px;font-family:宋体">湍流的雷诺数</span>
D、<span style="font-size:14px;font-family:宋体">层流无径向脉动,而湍流有径向脉动</span>
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