变均匀

The ionosphere is a complex medium,which is aeolotropy,asymmetry,dispersive and changes randomly with time.

电离层是随机时变，各向异性，非均匀、色散的复杂介质。

MRI characters mainly were that amyotrophy attenuated muscle and muscle outline collapsed;intramuscular adipose heterogeneitily infiltrated,which resulted in MRI signal heterogeneitily raising up and the ratio of lumbar subcutaneous fat MRI signal to lumbar dorsal muscle MRI signal descending;intramuscular spatia was revealed as line-lamellar form or featheriness or grid grid form.

主要MRI表现包括：肌肉萎缩造成肌肉变细、形态萎缩、轮廓萎陷；肌内不均匀性脂肪浸润，造成信号不均性增高，皮下脂肪信号与肌肉信号比值下降，肌内间隙呈线片状、羽毛状或网格状。

My breathing grew so shaky that the anesthesiologist gave me oxygen and then, thankfully, put me back to sleep.

我的呼吸变得很不均匀以至于麻醉师给我注入氧气接着，感谢上帝，我轻轻的睡去了。

Based on the laminate theory, a laminate weakened by damage is treated as an anisotropic thin plate. Using the complex potential method in the plane theory of elasticity of an anisotropic body, the series solution of finite anisotropic thin plate containing an elliptical inclusion is proposed with the help of Faber series. A hybrid element with an elliptical inclusion for anisotropic materials is obtained by using the hybrid variable principle, and the element efficiency is verified by numerical examples. The state of the damage is modeled by an elliptical soft inclusion, and using the point stress criterion based on characteristic curve and Yamada-Sun etc. criteria, the prediction of the strength of a composite laminate with damage is set up. The effects of various parameters on the stress distribution and the residual strength of a composite laminate weakened by damage are detailedly studied.

首先基于经典层板理论，将复合材料层板的弹性问题化归为均匀各向异性板来求解；采用各向异性体平面弹性理论中的复势方法，以Faber级数为工具，给出了有限大含椭圆核各向异性板弹性问题的级数解形式；利用杂交变分原理，成功导出含椭圆核各向异性板杂交应力有限元，并用算例验证了该单元的可行性和有效性；采用含刚度折减椭圆形弹性核的冲击损伤模型，引入基于特征曲线和Yamada-Sun破坏准则的点应力判据，建立了含损伤复合材料层板剩余强度的分析方法；通过数值计算详细讨论了各种几何参数对损伤层板应力分布、剩余强度的影响，得到了一系列对工程应用具有实用价值的结论。

Results show that time delay of 2000 ns can occur in an apodized FBG with length of 50 meters and corresponding average velocity is

对孤子时延进行的数值仿真表明， 50 m的变迹光栅中可产生2000 ns的时延，平均速度仅相当于均匀光纤中的0.1倍。

Central difference method and backward difference method were used for transient thermal analyzing,and the result suggested that two methods have same accurate for this problem.

太阳辐射热流、地球红外辐射热流及地球反照热流是航天器产生不均匀时变温度场主要热量来源。

Now he watched the purple recede blotchily from Uncle Vernon's face, making it look like badly mixed black currant ice cream.

现在，他注视着弗农姨父脸上的紫色一块一块地褪去，使他的脸变得好像搅拌不均匀的黑醋栗冰淇淋。

Combining with the measurements of scanning electron microscope, cathodoluminescence, energy dispersive spectroscopy, and photoluminescence, we establish that the origin of the Stokes shift in InGaN ternary compound arises from alloy composition fluctuations.

综合实验结果和许多文献资料，我们可了解样品的史托克位移效应和浓度调变间的关联性，并建立其产生的机制是由於样品制成过程中，难以避免的成份不均匀和相分离现象。

By combining the theory of sectionally holomorphic function, the analytical extending method, Cauchy model integral, the analysis of the singularity of complex functions and Riemann boundary problem, analytic relations between the complex potentials were obtained.

研究压电材料在均匀热流作用下螺型位错与圆弧裂纹的相互作用，综合运用复变函数分区全纯理论、解析函数奇性主部分析方法、解析延拓原理、Cauchy型积分以及Riemann边值问题求解方法，获得各复势函数之间的解析关系，进一步得到了特殊情况下所讨论问题的封闭解，并求解出像力随温度梯度和位错位置变化的表达式。

Further more, transmission systems with branches of uniform and nonuniform transmission lines can be studied with this method conveniently. Two approaches for solving the ABCD matrices of nonuniform lines are given, one is the method of equivalent cascaded network chain, another is the one-step method.

波形张驰迭代法最近几年才被用来分析多导体传输线的时域响应，在第五章作者用此方法首次分析了具有频变参数的传输线，并将波形的概念进一步推广，给出了用波形张驰迭代技术求解非均匀传输线ABCD矩阵的方法。

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％。