衰减曲线

In order to make the microstrip equalizer matchs the given attenuation curve respectively ,it should be attenuation adjustable and quality factor adjustable besides frequency adjustable.

摘要为了使微带均衡器满足衰减特性与给定的误差曲线逐点拟和的要求，就必须使其频率可调、衰减可调、品质因数可调。

The results showed that the lesion of X-rays oncells displayed gradually attenuation with depth (or cellsurvival fraction displayed gradually increase with depth)while the lesion of heavy ions on cells followed Bragg curve(or cell survival fraction was inverse Bragg cueve).(2)Thedynamic change of micronuclei and cell survival inhepatoma SMMC-7721 irradiated by 25MeV/u〓 wasstudied.

采用HeLa、B16两种细胞分别研究了X-射线和重离子在水介质中入射的深度与相应细胞的存活率（1-失活率），结果表明：X-射线对细胞的损伤随深度而逐渐衰减（或细胞存活随深度逐渐增加），而重离子对细胞的损伤则为Bragg曲线（或细胞存活为倒Bragg曲线）。

Researched influence of frequency on characteristic of electromagnetic wave transmission in tunnels, and analyzed characteristic of electromagnetic wave transmission in circular, arches and curved tunnels by method of metal wave guide, and gives approximate formulas of attenuation rate. Main conclusions we obtain are as follows: in circular,rches tunnels, if frequency is higher, attenuation rate is smaller, it is beneficial for EM waves to transmit, in curved tunnel, higher frequency, more attenuation rate ...

研究了频率对井下电磁波传输特性的影响，采用金属波导法分析了圆形、拱形及弯曲隧道中电磁波的传输特性并给出衰减率近似公式，得出主要结论：在圆形和拱形隧道中，频率越高，衰减率越小，越有利于电磁波的传播；在弯曲隧道中，频率越高，衰减率越大，不利于电磁波的传播；通过特性曲线与井下实验数据相比较得出在900MHz左右为井下无线通信系统传输信号最佳频段。

The fit of the decrement to the simulation was done with the burdening decay experiment, and the curve and equation of the decrement was found.

通过载荷衰减实验对模拟所得结果进行了衰减量的实验数据拟合，得出了衰减量的曲线和方程式。

Further, fluorescence decay exhibits more close to single exponential decay profiles and has longer measured lifetime.

此外萤光衰减呈现出接近单一指数衰减的曲线并且有著较长的生命期。

The computing plots of the solutions from the two methods were inconsistent under the specified boundary-initial conditions, which stirred up the debate of the effectiveness of Maxwell's equations in lossy medium. It is found that the differences between the two numerical curves can be viewed as the Gibbs phenomenon caused by cutting off the high frequency components in computing the infinite integral of the numerical curve of Harmuth's solution.

通过比较两种解析解的数值曲线得出：两者的差异在于求解Harmuth解的数值曲线时，采取无穷积分的高频截断近似产生了吉布斯现象；在计算Harmuth解的数值曲线时不断增大积分上限，其数值曲线的振荡不断向不连续点处收缩，而且衰减加快，因此在求解Harmuth解的数值曲线时，若积分区间取为理想无限大，则可以预见相同计算精度下两种方法的电场解的数值曲线是一致的。

At the same time, under the condition of small strain, firstly, the secant shear modulus was always larger than the tangent shear modulus. Secondly, when the logarithmic coordinates were applied to describe shear strain, the decrease of shear modulus with shear strain could be expressed by reversed S shape curve with two inflexion points, and through analyzing and validating, the deduced equation could perfectly reflect this characteristic. Finally, different stress paths and strain areas would lead to different attenuation trends.

而且，在小应变范围内，割线剪切模量总是大于切线剪切模量；当剪切应变采用对数坐标表示时，剪切模量随着剪切应变的增加而衰减，且衰减的规律都可以表示为带有两个拐点的反S型曲线，经分析验证本文所得公式3可以对此特性进行很好地反映；但应力路径、应变范围不同其衰减幅度不同。

A length of straight line and a length of undamped sinusoid of 1/4 period replace the envelop as the response. By the new methods, calculation error is greatly reduced and system character analysis is completed with advantage.

新方法使取代曲线由包络线改为与响应曲线非常接近的一段直线和一段1／4周期的不衰减正弦曲线，从而使计算误差大大减小，这将有益于提高系统性能分析的质量。

The analysis of the experimental curves shows that ,the larger the size of the madia,the lower is its gamma -field and the higher its attenuation ratio;with the increasing temperatureof the media, the absorbent of gamma - ray and the attentuation ratio increase.

经试验的数据曲线分析表明，介质粒度越大，其γ场降低，衰减率高；而介质的湿度越大，介质对射线的吸收量增高，衰减率增高。

The frequency-dependent sensitivity coefficients with respect to the parameters of the radial layers are computed quantitatively. Comparing the horizontal permeability with the vertical permeability, the horizontal mobility plays the predominant role over the entire frequency range. The Stoneley wave is more sensitive to the velocity of the horizontally propagating SH wave than the flexural wave.

利用灵敏度曲线定量研究了不同频率下地层各个参数对相速度和衰减系数的贡献大小，主要结果显示模式波的衰减受水平渗透率影响明显，而垂直渗透率的变化对模式波几乎无影响；斯通利波对水平向传播的横波速度比弯曲波的灵敏度高。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。