x-xm 中文意思是什麼
x-xm
解釋
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Such model is as follows where xi ( t ), xm ( t ) denotes the density of the immature and the mature population predator a " at time t respectively ; y ( t ) denotes the density of the prey population y at time t. the mature predator of x can reduce tins death rate ; by hunting and feeding on the prey } "
所示模型如下:其中, x _ m是捕食者的成年種群, x _ i是捕食者的幼年種群,且幼年不能捕食; y是被捕食者; e ~ ( - )是由幼年到成年的轉化的概率;是成熟期。
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