查询词典 spectral

This filter is ideal for high performance applications where spectral isolation, flattop filter function and low chromatic dispersion are required.

此滤波器适用于频谱隔离，平顶过滤功能和需要低色散的高性能应用中。

Spectral aliasing is caused by interference between two frequencies such the luminance and chrominance signals.

光谱混叠是由两个频率如亮度和色度信号频率之间的干扰引起。

Chapter 2 researches on spectral distribution of radiant flux in light resources, advises that it is satisfying and convenient in lighting engineering with applying radiance method in lighting lab, measuring by PR-650 chromo meter.

论文第三章进一步研究了视觉科学最新成果光生物效应的理论依据和测定方法，视觉功效法是研究中间视觉的有效研究方法，反应时间表征了中间视觉和光生物效应的总视觉效果和人眼真实的视觉功效。

Emission in this spectral line shows the upper chromosphere at a temperature of about 60,000 degrees K (over 100,000 degrees F).

在此发射光谱线显示，在约6.0万度，温度K上色球（超过10万华氏度）。

Though the reddish hydrogen radiation is most visible to the unaided eye, the chromosphere also radiates thousands of additional spectral lines.

虽然微红色的氢射线可被肉眼直接观测到，色球层也可辐射数千额外的谱线。

Second, proceeding with the fact thatthe constructing vector wave functions of conventional circular cylindrical and sphericalvector wave functions are linear independent solutions to the electromagnetic field waveequations in biisotropic medium,spectral impedance boundary conditions are proposed forinfinitely long perfectly conducting circular cylinder and sphere coated with biisotropic media,respectively,which generalize the applicable range of planar structures and are suitable toanalyze the electromagnetic problems involving their counterpart structures.

所用的方法是在Fourier变换谱域中的一阶线性微分方程组理论和矩阵技术，提出了适用于Chiral媒质半空间辐射问题的耦合镜像原理(即镜像电流的振幅和相位是由Chiral媒质中的本征左、右旋圆极化波相互耦合来确定的)和适用于研究平面分层Chiral媒质电磁问题的一般性更高的分析方法。

A analytical expression of spectral bandwidth is obtained through retaining term of first order(when expanding circular frequence of wave vector in Taylor series).

利用该解析式，采用数值计算的方法，分别研究了带宽随信号光波长、抽运光波长和非共线角的变化规律。

Based on the varieties of radiation intensity or spectral distribution, the effective identification of circumjacent object could be done.

因此基于辐射的强度或光谱差异，可以完成对周围目标的有效辨识。

The conventional classification methods are hard classification based on the spectral statistic features of the pixels.

这些土地利用类型的波谱特征为进行土地利用分类提供了波谱理论基础。

At present, with the development of the science and technology, wind conditions can be deduced from various satellite climograph, this paper will adopt wave spectral numerical models to offer wave conditions with enough resolution and accuracy, taking into account that errors may occur during directly evaluating wave parameters from empirical formulas.

现今科技的发展使人们能从卫星气象图片计算出风场，为避免由经验公式从风场推算波高分布的误差，本文将利用波浪谱数学模型以提供具有足够分辨率和精确度的波浪场。

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％。