人们注意到一定数量的其他欧洲国家(丹麦、意大利和乌克兰)虽然现在流感发病处在一个较低水平，但已呈现出增长态势。
An increasing trend has also been observed in a number of other European countries (Denmark, Italy and Ukraine) where influenza activity currently remains low.
算例表明，当混沌搜索的次数达到一定数量时，混合优化方法可以保证算法收敛到全局最优解，且计算效率比混沌优化方法有很大提高。
Numerical examples illustrate that the present method possesses both good capability to search global optima and far higher convergence speed than that of chaos optimization method.
在直播过程中，网红会收到来自粉丝送的虚拟礼物，积攒到一定数量可以卖掉变现，也有粉丝会直接送红包，每月可以轻松地挣到几万块。
While doing live show, those online celebrities will recieve virtual gifts from their fans, and certain amount of gifts can be converted into cash. Some fans even give red packets directly.
外方合作办学者应当从本教育机构中选派一定数量的教师到中外合作办学机构任教。
The foreign cooperator shall send a certain number of teachers from its own educational institution to teach in the Chinese-foreign cooperatively-run school.
背板是一个复杂的系统。它包括了一定数量的影响到信号完整性的变量。
The backplane is a complex system containing a number of variables that can impact signal integrity.
这种设施，太阳一个的第一个版本，管理从1982年到1988年，但是有一定数量的问题。
The first version of this facility, Solar One, operated from 1982 to 1988 but had a number of problems.
该算法的基本思想是：根据模型特征或由用户定义一定数量的新点，再根据某些原则将新点分布到原模型上，生成一个中间网格。
Its basic idea is to distribute a set of new points onto original models on some principle, create an intermediate mesh. These points are figured out based on the features of model or defined by user.
该算法的基本思想是：根据模型特征或由用户定义一定数量的新点，再根据某些原则将新点分布到原模型上，生成一个中间网格。
Its basic idea is to distribute a set of new points onto original models on some principle, create an intermediate mesh. These points are figured out based on the features of model or defined by user.
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