查询词典 attenuation curve

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）。

The exponential attenuation curve of the gain along the pulse propagation time is simulated.

分析了分幅相机增益衰减的理论模型，利用Mathematica软件模拟了增益随电脉冲传输时间指数衰减的曲线图。

In order to avoid the inaccurate measure of the positions of the CTF zero blurred by attenuation at high frequency, we used a Gaussian curve to compensate the attenuation of Fourier transform of image at high frequency in such way that the amplitudes of two CTF zeros at the curve were compensated to the same value.

由于冷冻电子显微图像通常信噪比很低，衬度函数曲线的零点的位置不容易分辨。

Then formaldehyde attenuation curve which purification products reduce 5~10 times formaldehyde were tested, which has been tested at 1 m^3 environment deck according to experiment condition of eliminator standard GB/T18801-2002. Moreover, purification quantity per hour was computed by mathematics line integral surface. Results: The purification quantity which formaldehyde has been purificated by kieselguhr material was 1.44 mg/m^2h.

本研究选用了硅藻土和光催化两种原理空气净化材料，以室内空气常见的污染物甲醛为目标，参照国家空气净化器标准(GB/T18801-2002)中的实验条件，在1立方公尺环境测试舱内分别发生室内空气质量标准10倍的甲醛气体，测试净化产品对甲醛衰减曲线，运用数学曲线积分面积的计算模式来计算单位时间净化量。

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。

Radius variation of image beam waist due to spherical aberration, which varies with the position of objective beam waist, and optical system focus is analyzed with the form of curve. At last,a design example of optical system used for laser plume attenuation testing system is given to illustrate the effect of spherical aberration on the image beam waist.

本文还提出了在设计过程中存在的球差对激光束像方束腰的影响，对其进行了理论分析，并给出了数学模型，总结出高斯光束的像方束腰半径与物方束腰位置、光学系统焦距之间的关系，并对本光学系统的设计进行了验算。

It was validated experimentally. Under the optimized operating condition for transparent samples, the changing rate of the phase difference curve near the resonance angle was reduced with the enhancement of the sample's attenuation coefficient. This degrades sensitivity of phase detection of the SPR based sensors.

结果表明：针对透明介质优化设计的SPR结构用于测量吸收介质时，相位差曲线在共振角附近的变化率随样品衰减系数的增大而减小，导致SPR相位型传感器的灵敏度退化。

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