Researches the interaction of the multiple equal plumes based on the principle of momentum congruence. Defines three velocity correction coefficients and a flow rate correction coefficient.
根据动量叠加原理对多股等羽流的相互作用进行了研究，定义了三个速度修正系数和流量修正系数。
Young quetzals can fly at about three weeks of age, but males do not begin to grow their long tail plumes for three years.
还长成的凤尾绿咬鹃在三周大时就可以飞了，不过，雄鸟在出生后的三年之内不会长出长长的尾羽。
Young quetzals can fly at about three weeks of age, but males do not begin to grow their long tail plumes for three years.
还长成的凤尾绿咬鹃在三周大时就可以飞了，不过，雄鸟在出生后的三年之内不会长出长长的尾羽。
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