垂

The application of Markov chain models in the analogue of sedimentary strata is introduced in the third of the paper.

论文对Markov链模型在沉积地层垂向分析中的应用进行了介绍。

Updos tend to be more flattering when a few tendrils or pieces of hair escape the twist. Use your fingers to pull out a few face-framing tendrils to make the style look a little less done. This prevents you from looking like a school marm or escapee from a Robert Palmer video from the 1980s.

如果有一些头发掉出来发髻会显得更加妩媚，用手拨出一些头发垂在脸的两侧，看起来像是有点没做好的样子，这样你就不会看上去像学校里的老女人或者从罗伯特·帕莫80年代的片子里跑出来的一样了。

However, Mateus, who is also working with researchers from Maastricht's Natural History Museum, believes the sauropod bones are just a beginning.

但也和马斯垂克自然历史博物馆研究人员携手合作的马泰乌斯相信，棘龙的骸骨只是开端。

And the Mathieu's equation, including only the linear coupling term, was also developed.

研究了横摇和垂荡非线性耦合情况下的动力不稳定区问题。

In order to solve the linear strong parametrical excitation equation, the method for solving strong parametrical excitation Mathieu equation is brought out. With the introduction of a new conversion, the strong parametrical excitation problem is converted to weak parametrical excitation problem. The second order approximate periodic solutions are obtained and the transition curves are gained by using a modified strained parametrical method.

为适应求解垂荡与纵摇耦合运动的线性强参数激励方程，提出了强参数激励Mathieu方程的求解方法，通过引入新的变换，将强参数激励问题转化为弱参数激励问题，应用改进的变形参数法求其二阶近似周期解和过渡曲线。

Based on the elastic theory of large deflection and by taking into account the variation of the axial force and its effects on bending deformation of the drillstring in vertical section,the vibration of the drillstring induced by fluctuating weight-on-bit is described by a parametrically excited system.A Mathieu equation describing the system is established by Galerkin Method.By extending the solution into a Fourier series,the curves of dynamic bifurcation values and the dynamically unstable regions surrounded by the curves are presented.

基于弹性大变形理论，考虑到轴力沿钻柱轴线的变化及其对钻柱弯曲变形的影响等因素，将受自重作用的铅垂井段钻柱在波动钻压激励下的振动转化为一个参数激励系统，用Galerkin方法首次得到了描述此系统的Mathieu方程，并通过将方程的解展成富里叶级数的方法，得到了该振动系统的动力分岔值曲线及其所包围的动力不稳定区。

We found that the mean square error of difference value between GPS monitoring deformation and the second-order leveling surveying deformation is less than 1 mm, and there is a smaller systematic error between the ellipsoidal height deformation and the second-order leveling deformation ,whose value is about 0.5~1 mm; however, this system error does not affect the outcome of vertical deformation monitoring.

结果 得到的GPS监测变形量与水准测量变形量差值中误差＜1 mm，且GPS所测大地高变形量与二等水准测得的变形量间存在一个较小的系统偏差，其值在0.5~1 mm之间，该系统偏差不影响垂向变形监测的结果。

He took the pipe from his mouth and laid it on the mantel, then stood irresolute a moment (unconsciously, from old habit, thrusting his hands where his pantaloons pockets should have been, and meditatively dropping his chin on his breast), and finally said

他把烟斗从嘴上拿开，放到壁炉台上，然后犹豫不决地站了一会儿（不知不觉，由于老习惯，把两手往以前的马裤裤兜的位置上插去，沉思地把下巴垂到胸前），最后说

The problem is treated as a two-dimensional medium with the discrete wave- number method in the vertical direction.

我们将问题看成是垂向均匀的二维介质，并沿垂直方向变换到离散波数域。

For an instant Madame Merle's colour rose and she dropped her eyes.

梅尔夫人的脸红了一下，她垂下了眼睑。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。