查询词典 attenuation

In the second part, we study noise attenuation of signal using wavelet analysis and nonparametric analysis.

第二部分对小波分析和非参数分析用于信号去噪进行了研究。

Objective To research the synergism and attenuation of insulin on chemotherapy of malignant tumor.

目的研究胰岛素对恶性肿瘤化疗的增效减毒作用。

Then, real-time power attenuation simulation is realized by means of a program-controlled wideband intensity attenuator.

该系统的设计能够较为准确地模拟激光引信在交会过程中的回波光功率大小，并可实时地仿真激？

This response is characterized by stabilization of the mitochondrion and increased mitochondrial biogenesis, resulting in attenuation of oxidative c-Jun N-terminal kinase activation.

这个反应的特征在于线粒体的稳定性和线粒体合成的增加，从而导致具有氧化特性的c-Jun氨基末端激酶活化的衰减。

A comparison is made between the performance of harmonic analysis method and that of Blackman window method through the simulated experiments, and in the condition of same order of filters, the stop-band attenuation of filters designed by this method is 5~7 dB more than that of filters designed with Blackman window in the range of different frequencies.

通过仿真实验，把其结果与用Blackman窗函数设计的滤波器的性能进行了比较，在滤波器阶数相同的条件下，在不同频率范围内，该方法比用Blackman窗设计的滤波器的阻带衰减大5~7dB以上，不仅过渡带宽依然变小，而且二者的通带波纹大小相差很小。

The influence of COD, temperature, concentrations of available chlorine, pH and light on attenuation of available chlorine of bleaching powder, and the tolerance of common carp and silver carp to available chlorine were determined under different conditions in a laboratory and on field.

在室内外不同条件下，研究了COD、温度、有效氯含量、pH和光照对漂白粉有效氯衰减的影响，以及鲤和鲢对有效氯的耐受能力。

Three kinds of mass attenuation coefficient have been used, which are the monoenergetic MAC at the mean energy of the MC simulated spectrum, the effective MAC of the Born approximation formula spectrum and the effective MAC of the MC simulated spectrum.

在密度提取中使用了3种不同的吸收系数－MC谱光子平均能量对应的单能质量吸收系数、波恩近似公式谱有效质量吸收系数和MC谱有效质量吸收系数。

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）。

Experiments show that the method is easy to apply and can reconstruct both bremsstrahlung and characteristic spectra with only a few attenuation data.

实验表明，该方法可利用较少的衰减数据重建包含特征辐射的球管光谱，算法简单易行。

The attenuation formulae of HF bridge circuit with phase-ground coupling and adjacent phase impact or not are derived in this paper.

本文导出了不考虑邻相影响和考虑相邻影响条件下的相地耦合高频桥路衰减公式。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。