改善

A ship course controller is designed for Norrbin nonlinear ship mathematical model with matching uncertainty. Combining the backstepping algorithm with the nonlinear damping algorithm to design controller, the nonlinear damping is used to cancel the uncertainty. The integral item is introduced in the design to improve the performance of the controller. Now, general ships can only use the electric gyrocompass to measure the course angle, but they have no equipments to measure the angular velocity, so in this article another ship course controller of output feedback is designed for Norrbin nonlinear ship, firstly the angular velocity is estimated by the observer and then the ship course controller is designed.

本文基于含有匹配不确定项的Norrbin非线性船舶数学模型，将backstepping算法和非线性阻尼算法相结合设计船舶航向控制器，利用非线性阻尼来抵消系统的不确定项，同时为了更好地改善系统的性能，在设计过程中引入了积分项；由于目前一般船舶只有电罗经用于测量船舶的航向角，还没有测量船舶航向角速度的设备，因此，针对Norrbin非线性船舶模型设计了一种输出反馈控制器，首先利用观测器对船舶航向角速度进行估计，然后再设计船舶航向控制器。

The exponential relation in (15) provided the potential for significant improvement in the angular resolution.

该指数的关系在（15）提供了潜在的改善的角分辨率的显示。

So the construction of this project can change the distribution structure of the production of maleic anhydride in china

因此本项目的建设，可以改善我国顺酐生产布局结构。

Then, according to Baird-Jackson' a anile scoring, clinical signs of these patients were assessed before and after the treatments.

然后定期随访，根据Baird-Jacckson踝关节评分值，比较治疗前后两组关节症状和功能的改善情况。

In order to improve the cycle performance of lithium-ion rechargeable battery, a little of anisole was added in the electrolyte system of EC／DEC／1.0 mol*L－1 LiClO4, with improved graphite and Li as electrode materials.

为了改善锂离子蓄电池的循环性能，在EC／DEC／1.0 mol／L LiClO4电解液体系中加入微量添加剂苯甲醚。

But the concentration of Li2CO3 remains nearly consistent and a new component, CH3OLi, is found in SEI. It can be concluded from these results that anisole reacts with the reduction product of EC and DEC, RCO3Li, in the first process of Li＋ intercalating into the carbon electrode. The obtained CH3OLi is helpful in building up a more effective and stable SEI of the carbon electrode, reducing the cointercalation of solvent molecular. All these contribute to the improvement of the cycle performance of lithium-ion battery.

根据以上分析结果，提出了苯甲醚对锂离子电池循环性能的影响机理：在Li＋嵌入石墨电极的初次过程中，苯甲醚和EC、DEC的还原分解产物RCO3Li发生基团交换反应，生成CH3OLi，该产物能有效提高石墨电极表面SEI的稳定性，减少锂离子嵌入石墨过程中引起的溶剂分子共嵌入，从而改善电池的循环性能。

Results The 7 patients with micrognathia after arthroplasty of tempromandibular joint ankylosis were corrected. The face was improved.

结果：7例颞颌关节强直关节成型术后小颌畸形患者，矫正了小颌畸形，面容获得明显改善，取得了理想的效果。

The effect of the anneal surroundings on the performance of the films is very prominent.

但是适当的掺杂量可以改善薄膜的导电性能。

Comprehensive description is done to problems in process of hard anodize for the spinning basket regarding the rotor cup,opening roller and twist stopper.

详述了对转杯纺纺纱器主要组件中转杯、分梳辊、阻捻头进行硬质阳极氧化处理存在的问题，介绍了新型化学镀镍处理工艺及配方，说明新工艺可不同程度提高上述三大件的使用寿命并改善成纱质量。

As the improvement of people's living standard and the living conditions nowadays,the change of medical treatment service mode and the upgrade of service faith of "human nature"in special,we have more requires on quality of life and personal medical care,anodyne artificial abortion is accepted by more women.

近年来随着人们生活水平的提高及条件的改善，尤其是医疗服务模式的转变及人性化服务理念的提升，人们对生存、生活质量和自身的医疗保健要求越来越高，无痛人流技术被越来越多地广大妇女所接受。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。