查询词典 Wavelength

Basic quantities in stellar photographic photometry (in particular, colour index and "effective wavelength") are formulated according to the assumptions that: 1 stellar radiation may be represented by some black body equivalent and 2 within the limits of a single photometric "receiver", intensity-wavelength relationship of the radiation may be taken as linear.

本文對着當前的發展，綜述了照相方法在恆星光度学中的地位。接着用兩個簡單的假设，即星体幅射的黑體近似和累積亮度範圍中的直线近似，把恆星光度学中的基本定義(如有效波長、等光波長和色指数等)和主要问题(如空間红化，亮度效应等)表以公式。

When based on dual wavelength chromatographic data analysis, a new method, namely dual wavelength characteristic information analysis, used for the base line correction, determination of number of components and region of pure components signal.

但色谱峰的重叠给多组分的同时分析带来了困难，因此针对色谱重叠峰的解析提出了不少方法，如曲线拟合、神经网络、小波变换、窗口因子分析、直观推导式演进特征投影分析等 [1～ 7] 。

When based on dual wavelength chromatographic data analysis, a new method, nam ely dual wavelength characteristic information analysis, used for the base line correction, determination of number of components and region of pure compon ents signal.

基于双波长色谱分析，提出了一种新的色谱重叠峰中背景校正、组分数和纯组分信号区确定以及各组分重叠情况的分析方法，即双波长特征信息分析。

It is important in multi-wavelength systems to have enough dispersion to break up cross wavelength interference problems but not so much dispersion that high bit rates become costly to transmit.

多波长系统中必须有足够的色散率来解决交叉波长干扰问题，但是也并不需要这么高色散率使比特传输的成本大大增加。

Choice of the signal wavelength in wavelength conversion by cross gain modulation in the SOA .

基于半导体光放大器中交叉增益调制效应的波长转换啁啾特性的分析。

With that the random noise is filtered out.The change of the wavelength may lead to the drift of the non-exchange phase drift, so influence the stability of the scale factor, also it is known the temperature is the key factor that affect the wavelength of the light-source.

论文在详细分析各种噪声的基础上围绕提高陀螺稳定性和精度做了以下工作：在深入分析陀螺物理特性的基础上，通过试验确定了陀螺系统的传递函数，通过分析将传递函数离散化并应用于自适应滤波，主要是滤除随机噪声。

First, at the condition of pH≈3, the quantity of aesculin was determined by choosing excitation wavelength 335nm and emission wavelength 455nm.

首先在pH≈3时，选择荧光激发波长335nm，荧光发射波长455nm，测定秦皮甲素的含量。

The plasma ignition threshold of metal is got through experimental and numerical study. The vapour and plasma ignition times of the target are got based on the equation of heat conduction and cascade model. We suppose that the plasma is ignited when generations of new electrons are born in vapour generation time. The influence of temperature on the thermodynamics and optics parameters of material also have been considered in the model. The resulting theory has good agreement with the experiment and overseas report. A blade method to measure the laser spot is given in this paper with validation and error analysis. The plasma threshold of metals in atmosphere and water ambients both are diagnosed with the light deflection and piezoelectric transducer. A Q-switched pulsed Nd:YAG laser operating at infrared (1064nm), visible(532nm) and ultraviolet (355nm) wavelengths has been used. Al、Fe、Cu are used as targets and get a similar results with both method. Theoretical and experimental analyses are applied on the influence of wavelength on the threshold have been done, both of which have shown that the plasma threshold of metals decrease as the laser wavelength increases; The plasma threshold of metals are higher in water than in air and the pressure of the shock wave in water is five times higher than in air .

从热传导方程和雪崩电离机制出发，假设当电子增值210倍时，考虑了温度对材料热力学和光学参数的影响时，得到了气化和等离子体点燃的时间，利用该模型进行计算得到的结果与国内外报道及自行通过实验测得的阈值基本一致；提出了利用刀刃法测量激光光斑面积的方法，并通过实验进行了验证和误差分析；利用光偏转装置和压电换能器分别对空气和水中金属等离子体点燃阈值进行了实验诊断，激光器均为调Q－YAG激光器（波长1064nm，532nm，355nm，脉宽10ns），靶材分别为Al、Fe和Cu，两种测试方法得到的等离子体点燃阈值基本一致；本文从实验和理论计算两个方面讨论了波长对等离子体点燃阈值的影响，均得到了等离子体点燃阈值随著波长的增加而减小的结论；对空气中和水中不同环境下金属等离子体的点燃阈值进行了比较研究，得到了金属在水中的等离子体点燃阈值比空气中的大，且水中产生的冲击波的压强是空气中的5倍左右的结论。

Moreover, their optimum excitation wavelength and emission wavelength are studied and chosen. The fluorescent property of carbaryl and metolcarb in different pH was studied, and the working curve was established according to the optimized experiment condition.

研究了农药的分子结构与其自然荧光特性关系，实验研究了这几种农药的激发光谱、荧光光谱特性以及本底溶剂的荧光光谱特性，研究并选择了它们的最佳激发和荧光发射参数，实验研究了不同pH值下西维因、速灭威等农药的荧光特性，测定了农药工作曲线。

Transmittance of the Fruit Raising Inner Pouch is 0-5% at the wavelength of 400nm and 21.2 % at the wavelength of 700nm.

使其在波长400nm处内袋纸的透光率在0～5％范围内，在波长700nm达到21.2％。

"Yes, now you can give yourself airs," she said, you have got what you wanted.

"对了，您现在高兴了，"她说道，这是您所期待的。

Then the LORD said to me: Rebel Israel is inwardly more just than traitorous Judah.

上主于是对我说：＂失节的以色列比失信的犹大，更显得正义。