第二种方法是使用之前开发的IPTi随机数学模型预测，在不同疾病流行条件下，实施IPTi可避免的患病数。
Second, a previously developed stochastic mathematical model of IPTi was used to predict the number of cases likely to be averted by implementing IPTi under different epidemiological conditions.
随机数学模型，近年来在许多领域得到了比较广泛的应用。
Random mathematical model has found wider use in many fields in recent years.
建立了机动再入弹头随机数学模型，根据攻击目标的要求选择合理的滑模变结构开关面。
The Stochastic mathematic model of maneuvering reentry warhead was proposed, and the rational slide switch surface was chosen based on the desire of attacking ground target.
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