水平

For the case of two products, we show that the objective function is concave and submodular, and obtain the optimal condition for the order quantities.

接着，我们从最优采购量、销售商的最优期望收益值及对顾客的服务水平等方面对销售商采用替代策略和不采用替代策略的两种情况进行比较，证明了销售商采用替代策略可以提高其经济效益及对顾客的服务水平。

Properties of efficient portfolios and the efficient frontier to the model are systematically analyzed. Our main results concerning the properties are: every efficient portfolio can be solved by minimizing portfolio risk under a given level of portfolio return or by maximizing portfolio return under a given level of portfolio risk; on the efficient frontier, the risk is a convex and strictly increasing function of the return and the return is a concave and strictly increasing function of the risk; the utility function on the efficient frontier can be expressed as a quasi-concave function of the risk or the return if the investor's utility function is quasi-concave.

从理论上系统地对该模型下的有效投资组合和有效前沿的性质进行了分析，结果表明：每一个有效投资组合可通过在给定期望收益水平的条件下最小化投资组合风险来获得，或者在给定风险水平的条件下最大化期望投资组合收益来获得；在有效前沿上，风险是收益的严格单调递增凸函数，收益是风险的严格单调递增凹函数；当投资者的效用函数是拟凹函数时，则有效前沿上的效用可表达成风险或收益的拟凹函数。

The result showed that there was reverse correlation between cultivated land area and urbanization leve1,the Coordinated index between urbanization and farmland area was a nonlinear relation in the past 30 years,the overall trend was"concessive and basically concessive→not concessive→concessive and basically concessive".

结果显示，30年间成都市城市化水平与耕地面积变化呈现出显著的负相关关系，城市化水平与耕地面积协调度呈阶段性分布，总体呈现出"调和和基本调和→不协调→调和和基本调和"的趋势。

The results indicate that conditional EVT is superior to other models;conditional distribution model is superior to conditional normal model;conditional EVT for confidence ...

结果表明，条件EVT比其它模型的测度效果好；条件t分布模型优于条件正态分布模型；置信水平为99%的条件EVT和置信水平为95%的条件t分布模型，分别是测度上证A、B股市场风险效果最好的模型。

The mechanism was similar to the equivalent barotropic warm core structure. The Conditional Instability of the Second Kind was the primary mechanism of development and maintenance for MCSs in case 2005. As the MCSs intensified and persisted, the latent heating was highly efficient in producing significant enhancement of Mei-Yu front systems. The LLJ intensified by Coriolis acceleration of ageostrophic wind was induced by the effect of latent heat release. The LLJ and the effect of latent heat released reinforce each other in convection system through a positive feedback process.

综合而言，2005年个案中梅雨锋面结构为垂直近乎不倾斜的浅系统，槽线系统不明显，锋面水平温度梯度微弱，低层具有强水平气旋式风切，较似正压系统，个案中MCS发展及维持机制，主要是透过CISK 过程来维持；其过程是由於低层锋面带上之辐合激发对流发展，对流潜热释放造成局部气压梯度增强，因而增强地转风；而潜热释放亦有利低层辐合之增强，产生非地转风，再透过科氏加速增强西南风，使LLJ增强，形成一正向的回馈作用。

Therefore, Guizhou Conger force firmly believes that the development of China's phosphorus chemical industry, must take a large unit, we must proceed from the reality of our country as soon as possible to enhance the level of business unit processes, we choose the level of how the techniques and devices, our business progress in positioning itself what will undoubtedly affect the company long-term economic and technological progress.

所以，贵州康格力坚定的认为，我国磷化工产业的发展，必须走装置的大型化，必须从我国的实际出发，尽快提升企业装置的工艺水平，我们选用装置的技术工艺水平如何，我们企业自身的进步定位怎样，无疑会影响到企业长久的经济效益和技术进步。

Therefore, Guizhou Conger force firmly believes that development of China's phosphorus chemical industry, must take a large unit, we must proceed from the reality of our country as soon as possible to enhance the technology business unit level, we use plant level of technical processes, our enterprise progress in positioning itself what will undoubtedly affect the company long-term economic and technological progress.

所以，贵州康格力坚定的认为，我国磷化工产业的发展，必须走装置的大型化，必须从我国的实际出发，尽快提升企业装置的工艺水平，我们选用装置的技术工艺水平如何，我们企业自身的进步定位怎样，无疑会影响到企业长久的经济效益和技术进步。

Along with living standards unceasing enhancement, people's artistic connoisseurship level unceasingly is also enhancing, the spare time, more people start to like reading some lofty dance art work.

随着人民生活水平的不断提高，人们的艺术鉴赏水平也在不断提高，茶余饭后，更多的人开始喜欢看一些高雅的舞蹈艺术作品。

And the level of conspicuous consumption is the outward appearance of this difference.

市场经济带来收入水平的差距，也导致社会层次的差距，这种差距的外在表现则是人们炫耀性消费水平的高低，本文就是以此为出发点分析炫耀性消费和收入再分配的联系，分析收入的差距和炫耀性消费的规模是否存在紧密的必然的联系。

It is because of the relative conspicuousness in this respect which requires urgent action to solve the problem so that the conclusion that English level determines the translation level for Chinese translators has been reached.

英语水平绝对不是决定翻译水平和结果的唯一因素，在具体某项翻译任务中，一个具体译者本身的弱项才可能是出问题的地方，才可能是决定翻译成败的因素。

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说，如果是/否的问题回答f可看的价值观念在许多最有限坐标，然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明：基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小，它既能去除奇异点，又能保持图像中目标的边缘不变性，具有很好的滤波效果。