查询词典 level-wind

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 rate of c-kit+ cells in the heart increased gradually from E10 with the highest level of 12.6±3.2% at E11, which was nearly similar to the fetal liver, except for E12 when the c-kit+ cells was 3.4±1.2% in the heart compared to the fetal liver with 11.6±4.1% c-kit+ cells. The rate of c-kit cells in the suspension cells from the heart at E11 maintained stable after 24h culture based in the stromal cells of the heart and AGM region with the same conceptus age, but the rate of c-kit cells obviously decreased in the condition of the stromal cells from the fetal liver. The c-kit cells of the three conditions were all at low level at 48h without significant difference.

通过流式检测c-kit+细胞我们发现，胚胎期心脏和胎肝c-kit+细胞比率几乎一致，E11时c-kit+细胞明显增多，分别高达(12.6±3.2)%和(9.6±2.8)%，但E12时心脏中c-kit+细胞明显减少，仅为(3.4±1.2)%，此时胎肝中c-kit+细胞为(11.6±4.1)%。E11的悬浮细胞与心脏内皮细胞和AGM区基质共培养24h时，c-kit+细胞数量保持稳定，但在胎肝基质细胞中c-kit+细胞数量明显减少，在共培养48h，三组中的c-kit+细胞均呈较低水平，组间没有显著性差异。

Not only baroclinic instability and conditional symmetry instability lie in the middle-low level, but also lie in the middle-upper level of DMMCS. At the west of DMMCS, there lies negative MPV2 column.

深湿对流系统的中低层不仅有对流不稳定，而且还有斜压不稳定、条件对称不稳定，而中高层必须有湿斜压不稳定和条件对称不稳定。

In terms of the synoptic environment and precipitation characteristics, there were some common characteristics in these two cases. For instance, warm and moist air with the conditional instability atmosphere in the lower troposphere, it was associated with the highest equivalent potential temperature gradient and strong moisture contrast to below 700 hPa. The lower-level convergence was the major produced mechanism of MCS and the low-level southwesterly flow generated convective instability.

从综观环境条件与降水特徵显示，两个案共通特徵包括（1）低对流层属暖湿条件性不稳定大气，（2）最大相当位温梯度以及水气梯度分布於700 hPa以下，（3）低层辐合均为个案中MCS之重要激发机制，（4）有明显低层西南喷流，大气呈现对流性不稳定状态，（5）中层短波槽线的移入，以及（6）高层辐散分流场的存在，提供MCS发展的有利环境条件。

By using an ultrasonic level detector and conductometer respectively, the level fluctuations and fluid mixed characteristics in the pool were measured under the conditions of different nozzle sizes and operation parameters.

数学模拟结果与激光测试流场变化趋势一致，在双侧孔水口形成的熔池上部区域计算结果与测试结果吻合较好，用所建立的数学模型可以较好地分析熔池内流体流动状况。

Based on the relationship between the risk-aversion coefficient and the confidence level in VaR, liquidity-adjusted VaR at any confidence level was obtained.

由于投资者风险偏好系数和VaR下的置信概率水平具有一一对应关系，可以通过最优路径集下执行成本的期望和标准差组合曲线来获得不同置信概率下，经过流动性调整后的VaR。

It is aimed to break through the oWe-neck and improve the students reading comprehension level. This research chooses altogether 136 students from two junior middle schools as trainee. Adopting excogitate of balance group experimentation, drawing up special xperimentation teaching text and using teaching infiltrating method and concentrating traning method to teach the students exposition article configurative schema reading strategy. Exploring this training influence on the student reading comprehension level.

本研究以重庆市两所中学的136名初中二年级学生为实验被试，采取平衡组实验设计，编制专门的《实验教程》，以专门训练与教学渗透相结合和集中训练两种方式进行说明文形式图式阅读策略训练，考察实验训练对学生阅读理解水平的影响。

You can't build Necromancy amplifier and upgrade level 4 creatures in Necropolis; you can't upgrade level 1, 6 and 7 creatures in Conflux.

说明：如果AI修建了这些被禁止的建筑，玩家不能利用它们升级以上所述的部队，也不能招募这些被禁止的部队。

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。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。