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According to the theory of first-order Born approximation,a Fourier Domain Optical Coherence Tomography model of single scattering infinite narrow beam is established,and the reason why it is hard to obtain the exact solution of integrated scattering equation is analyzed.

选择多层介质作为样品，根据波恩一阶近似理论建立了单次散射的无限细直光束频域OCT模型，并分析了散射积分方程很难得到精确解的原因。

Technical parameters and characters of sampling system determine that seismic wave amplitude recorded by seismograph is approximate relative amplitude. Using these data necessarily leads to serious distortion of inverse parameters. So using Born approximation can only obtain the location of interface even if the earth medium is little disturbance.

采集系统特性和技术指标决定了所记录的地震波振幅值为近似的相对振幅，用这样的相对振幅作为地震波参数反演的振幅真值依据，必然导致反演参数值的严重失真。

As borsch, apple cider vinegar take over the qualities of base from witch it was obtain, in this case from apples, fruits very rich in potassium, essential mineral for normal function of important system from our body.

作为borsch ，苹果醋接管素质的基础，这是获得巫婆，在这种情况下，从苹果，水果非常丰富的钾，重要的矿物质的正常功能非常重要的系统由我们的身体。

If write " haing Li Bote " continuation, want those who obtain former writer to agree of course.

就如写《哈利·波特》续集，当然要取得原作者的同意。

People can obtain a compreheasive understand about granulated chicken bouillon by comparing granulated chicken bouillon and monosodium glutamate.

通过对鸡精、味精的对比使人们对鸡精有了更全面的了解。

Senate of United States Congress already was about to obtain the immigrant that pass in Boule act holds a debate.

美国国会参议院即将就一项已在众议院获得通过的移民法案举行辩论。

Due to the restriction of computational complication and precision,WRM boundary collocation method can only be used to simulate temperature fields of single-particle model,as for the case of some more complicated particle geometry shape it is very hard to obtain sufficient approximation solutions.Thus,BEM is adopted to analyze the thermal conduction problem of composites with particle of arbitrary geometry.

由于受计算复杂程度和计算精度的限制，采用加权残值法只能分析单夹杂问题，且对于更复杂的夹杂形状很难得到良好的近似解，因此接下来采用边界元方法分析了具有任意形状夹杂复合材料的温度场问题。

In order to obtain a more accurate prediction of intersection between the temperature gradient measured at sub-seafloor and the gas hydrate phase boundary curve i.e.

为了能更准确的求得天然气水合物稳定生成的底部，即海床的地温梯度与天然气水合物稳定曲线的交点。

The first is how to determine boundary curve of surface in triangular domain and after deducing, simultaneous equations is proposed in the dissertation. The second is how to determine the coupling parameter. The third is present simultaneous equations in order to obtain G1 continuous considering the continuity between two triangular patches and the fitness rules.

具体的工作体现在三个方面：一是对拟合条件下的三角域曲面边界线的确定，本文经过推演给出了求解方程组；二是对耦合参数的确定；三是在考虑相邻两片三角域曲面连续性的同时将拟合的规则纳入，给出了求解方程组以达到G 1连续。

In this paper, we obtain the high global accuracy for two point boundary value problem , by using the finite element postprocessing technique on some superconvergence estimates.

本文针对两点边值问题，在一些超收敛估计的基础上进行后处理，获得了整体高精度。

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％。