查询词典 attenuation factor

According to the Source attenuation model, Lambert′s cosine law of diffuse reflection and Phong specular reflection model, 2 equations used to calculate the opacity and intensity of every voxel in the volume data were obtained.

方法由源衰减模型、朗伯漫反射余弦定律和Phong镜面反射模型，推导出计算数据场中每一点的不透明度和明暗度的计算公式，通过旋转光源和视点，来自不同观察方向的感兴趣结构的体绘图被满意地生成。

By adjusting the weight, different component in the volume can be filtered out. According to the Source-attenuation model, Lambert's cosine law of diffuse reflection and Phong specular-reflection model, two equations used to calculate the intensity of every voxel in the volume data are obtained.

由源-衰减模型，朗伯漫反射余弦定律和Phong镜面反射模型，推导出了计算数据场中每一点明暗度的计算公式，通过旋转光源和视点，来自不同观察方向的感兴趣结构的体绘图能被满意地生成，从而避免了对内存中整个体数据的旋转。

Fiber attenuation was measured as 6.84dB/m at 1550 nm by the cutback method.

采用剪断法测得在1550 nm波长下光纤的传输损耗为6.84 dB/m。

As a contribution to the control domain, based on the DAA (Disturbance Attenuation Approach) of H〓 theory, a new method to design hydraulic turbine governors is proposed.

基于本文提出的水电机组的状态评估，提出了经济性能维护的维护策略，并用案例说明了该策略的实施。

Mass is the best sound dampener, so masonry walls will provide the best sound attenuation, but wood, specifically tongue-in-groove or continuous boards or panels, are also good choices.

质量是最好的声音沮丧的，因此，砌石墙将提供最好的声音衰减，但木材，特别是舌头在槽或连续板或面板，也是很好的选择。

SRC in SDR is also discussed, and two improved structures of CIC filter are presented. The first one is a CIC decimation filter based on polyphase structure and partially sharpening technique, which is suitable for the situation where the requirements in passband attenuation is not very high while the requirements in alias suppression and operating speed are relatively high. The other one is an improved CIC-Rotated Sinc decimator which possesses improved frequency response, low operating rate and low cost in hardware as well.

研究了软件无线电中的采样率转换技术，给出两种改进的CIC滤波器结构；(1)基于多相结构和部分尖锐化的CIC抽取滤波器，该结构适用于通带衰落要求不是很高，混迭抑制和滤波速度的要求相对较高的场合(2)一种改进CIC-Rotated Sinc抽取滤波器，该结构在获得好的通阻带特性的前提下，一方面降低了整个CIC滤波器结构的工作速率，另一方面尽可能地降低硬件实现的复杂度。

In order to solve the attenuation and decoherence problem of long-distance quantum communication, the technique of quantum repeater appeared.

但实用的量子中继技术，需要解决纠缠同步问题。

The reasons of the capacity attenuation have primarily to accompany with the Li~+ ion embedding material on discharge process the effect of Jahn-Teller of the occurrence, the deliquescence of the cathode manganese in the material and the decomposition of the electrolyte.

在锂离子电池众多的正极材料中，尖晶石型LiMn_2O_4化合物，由于其原材料资源丰富，价格低，环境污染小，合成工艺简单，成为最有希望取代LiCoO_2的材料，但LiMn_2O_4存在容量衰减大，循环寿命短等问题，阻碍了其商品化应用；容量衰减的原因主要有在放电过程中伴随着Li~+离子嵌入发生的Jahn-Teller效应，正极材(来源：AacBCbd论4b文网www.abclunwen.com)料中的锰的溶解和电解液的分解。

The author compares the effects of Dirichlet boundary condition and attenuation one on artificial boundary with that on transmitting boundary, so does the absorption effects, the author also demonstrates the advantage of transmitting boundary.

文中还就刚性边界条件、衰减边界条件对人工边界的影响及吸收效果与透射边界作了对比，验证了透射边界的优越性。

By using inlet guide vanes,great attenuation of total pressure distortion and static pressure distortion,weak incidence angle changes and low total temperature distortion production through the rotor were obtained.

1引言随着新一代飞机机敏性的进一步提高及其飞行包线范围的进一步扩大，其推进系统进口流场品质进一步恶化，表现为进气总压畸变程度的增加，从而引起发动机性能降低、稳定裕度的下降[1~5]。

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。