A model that had a single common ancestor and allowed for some gene - swapping among species was even better than a simple tree of life.
一个拥有单一共同祖先且允许物种间部分基因彼此交换的模式甚至更优于树形生命模式。
As the example of the single vegetable species cabbage, its price problem is studied quantificationally in the facts of identification, diagnose, mimic and forecasting by using ARIMA model.
从研究单一蔬菜品种卷心菜开始，利用ARIMA理论和方法，从模型的识别、诊断、拟合与预测定量地研究其价格的问题。
Firstly, we propose and study the single-species discrete population model with stage structure and birth pulses.
在第二章，我们研究了密度依赖生育脉冲对单种群阶段结构离散模型的动力学行为的影响。
Three different induction control are exerted on a single-species model with stage structure. The corresponding induction control domains are got.
对具有阶段结构的单种群模型实施了三种诱导控制，分别找到了相应的诱导控制区域。
Three different induction control are exerted on a single-species model with stage structure. The corresponding induction control domains are got.
对具有阶段结构的单种群模型实施了三种诱导控制，分别找到了相应的诱导控制区域。
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