重力

19AM -"Features? New curved aluminum design with curved glass -- and enhanced UI with new features. We've taken the accelermoter from the touch and iPhone and it does some great things, and you can use the Genius function on the iPod."

10：19AM -新特性？我们设计了新的圆角跟弧形的屏幕，加上改良的UI设计，同时我们把用在iphone 跟touch上面的重力加速器功能加上去了，现在你也可以在ipod上面体验这个美妙的功能了

Today's topic is curved space and its relation to the phenomena of gravitation.

今天的主题是弯曲空间及它和重力现象的关系。

This study shows that for improving development effect in the cyclic flooding, order of roles played by various forces are: capillary force, elastic force, while gravity plays no part in it basically.

研究表明，在周期注水改善开发效果中，各种力所起的作用大小不同，毛管力的作用是主要的，弹性力的作用是次要的，重力基本不起作用。

International Thermonuclear Experimental Reactor gravity support system ; finite element ; cyclic symmetry ; thermal analysis ; coupling analysis

ITER重力支撑系统；有限元；周期对称性；热分析；耦合分析

The effects of eccentric mass, damping, inertia force and gravity on the vibration amplitude were analyzed.

在此基础上，分析了质量偏心、阻尼、惯性力和重力对振幅的影响。

With twin Sono-class thrust pods and four stable but light Daystar Craft repulsorlift generators, the DC0052 provided swift, cheap, and reliable point A-to-B transportation.

DC0052配备了一对"索诺级"推进舱和四个稳定轻巧的昼星反重力发生器，是快捷、廉价、可靠的点对点交通工具。

This paper has given a thorough investigation into theapplication of BP neural network to gravitational density interface inversion as well as the implementation of wavelet theory in potential field decomposition and, on such a basis, analysed and evaluated the prospect of applying wavelet neural network to the inversion of gravitational and magnetic data.

文摘：对BP神经网络在重力密度界面反演以及小波分析在位场分离上的应用进行了深入的研究，进而对小波神经网络在重磁资料反演中的应用前景进行了分析、评价。

This paper overviews the various algorithms for least square collocation, discusses the matrix QR decomposition, derives the relationship between QR decomposition and generalized inverse matrix, and obtains least square inverse used for calculating matrix. In addition, the estimation formula for least square collocation by QR decomposition and its accuracy formula are derived. A case study is conducted using gravity anomaly test and calculation to demonstrate that the QR method is correct and valid in least-square collocation calculation.

分析了目前采用的最小二乘配置法解算方法，在讨论了矩阵的QR分解方法的基础上，推导得出了矩阵QR分解与广义逆矩阵的关系，得出了可以直接利用QR分解求解矩阵的最小二乘逆，并推导了应用QR分解求解最小二乘配置的估值计算公式和精度估算公式，最后通过重力异常实例进行了计算，得出矩阵的QR分解用于最小二乘配置解算的正确性和可行性。

Defining the gravity field as a region or a space is a misleading concept in geophysics.

这个定义不同于国外英文地球物理教科书、专著及中、英、俄文场论教科书对重力场的定义：空间中的重力。

Poisson's equation:In space where the source density is ρ, the Laplacian of a : potential U is 2 U = 4πρK, where is the operator del and K is a constant (gravitational constant in case of mass and gravitational potential).

泊松方程：在源密度为ρ的空间中，位场 U 的拉普拉斯算子为： U = 4πρK，。在米-千克其中为 del 算子，K 为常数(质量的万有引力常数和重力势)秒单位制中应去掉常数 4π。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐