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In this paper,we consider the existence and uniquness of solution for Dirichlet problem of the Helmholtz equation on the domain with corners, i.e problemFor smooth boundary,we use potential theory to transform the problem into second kind boundary integral equation ,and use Fredholm alternative theorem,we obtain the existence and uniqueness of Dirichlet problem.

在本文中，我们考虑边界含尖点的有界区域上Helmholtz方程△u+k~2u=0的Dirichlet问题即问题与问题解的存在及唯一性。

You can use like this and you are welcome to use it free of charge!

你可以使用这样的欢迎您使用免费的！

Finally, the system through the use of green refrigeration for quality, a decrease of freon coolant use, and reduce the damage to the ozone layer, reflect ecological and environmental protection.

最后，系统通过使用绿色环保制冷工质，减少了氟利昂制冷剂的使用，减少对大气臭氧层的破坏，体现生态和环保的理念。

Compare to CK and RP without applying phosphate fertilize, growth status, frondage, bi omass,, phosphorus use efficiency of corn was increased and phosphorus use efficiency of root is especially high. Pot cultivation experiment results also shows: bioavailability and chemistry availability do not fit close.

这一趋势变化也与苗期玉米试验的结果基本吻合，说明改性磷矿粉的颗粒减小程度和粗糙程度的增加幅度和能与其生物有效性存在一定相关。

Characteristic: 1st, when water flowing not the pressure damages; 2nd, non-contact induction signal sample; 3rd, guards against the dripping of a water clock, the size current capacity does not have the error; 4th, the installment does not divide the direction; 5th, table when assembly the disposable tack-dry, prevented cheats; 6th, can generate electricity the outer loop work to use electricity voluntarily, lengthens the battery period of revolution; 7th, the battery can replace voluntarily, the magcard box and the battery box are equipped with the self-locking security function; 8th, has the magnetization to guard against the boiler scale function; 9th, this table lifelong does not use the dial gauge; When 10th, this table uses in the natural gas and the liquid gas, whether there is can in the automatic detection room the air noxious gas, if has can start the exhaust fan automatically (exhaust fan switch with this table connection), and the automatic shut-off table valve, plays the safe role; When 11th, this table uses in the warm air, according to the temperature, the time, the area cost, the temperature could not achieve the stipulation cost, the user cannot act according to own current economic condition to open at will stops, and is equipped with the frostproof function, to does not need the warm air the heating equipment not to be able for a long time to ruin by freezing.

特点：1、水流动时无压损；2、非接触感应信号取样；3、防滴漏、大小流量没有误差；4、安装不分方向；5、表在装配时一次性粘固，防止作弊；6、能自行发电补充电路工作用电，延长电池使用时间；7、电池能自行更换，磁卡盒和电池盒设有自锁防盗功能；8、具有磁化防水垢功能；9、该表终身不用校表；10、该表用于天然气和液化气时，能自动检测室内空气有无有害气体，如有能自动启动排气扇，并自动关闭表阀，起到安全作用；11、该表用于暖气时，根据温度、时间、面积计费，温度达不到规定不计费，用户可根据自己的经济条件随意启停，并设有防冻功能，对长期不用暖气的采暖设备不会冻坏。

This scheme takes glass acrylics as the main material and frustum while lamps, light and shadow as the main shaping means. We believe that we should use a kind of "flowing" beauty to express the sense of freedom and good order, integrate materials and techniques and take full use of simple ways so as to give people a sense of dizzy smoothness not a kind of ostentatiousness.

本案中以玻璃压克力为主材，为截体，而灯、光、影是主要的造型手段，我们认为要将一种"流动"的美表现出淋漓有序的感觉，利用材料和技法的相辅相成并通过朴实的手法自然的实现，才可能使人感受到一种眩目中的流畅，而不是一种浮华。

You can use these to achieve full-screen dialog box, and you can use it to switch to the other running applications.

用这类你可以实现全屏对话框，并且你用它可以切换到运行的其它应用程序中。

The author also expected that the era of multiple use of single fumigant would be replaced by those fumigants for special of a certain field use gradually.

由于它具有高效、穿透性强、快速、杀虫谱广等优点，总体来说，被认为是和磷化氢一样的气体杀虫剂的两大支柱之一。

In order to use the interesting furniture better, fun furniture in this article through the analysis of functional, space, color, texture and style lines and four areas of interest to describe the use of furniture.

为了更好的使用趣味性家具，本文通过对趣味性家具的分析，从功能、空间、色彩、线条和质感与风格四个方面来论述了趣味性家具的运用方法。

In order to better the use of interesting furniture, fun furniture in this article through the analysis of functional, space, color, texture and style lines and four areas of interest to describe the use of furniture.

趣味性家具在此背景下应运而生。为了更好的使用趣味性家具，本文通过对趣味性家具的分析，从功能、空间、色彩、线条和质感与风格四个方面来论述了趣味性家具的运用方法。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。