查询词典 wavelengths

They looked for the emission of certain wavelengths within the radio part of the electromagnetic spectrum.

他们寻查了电磁波普的无线电波段内所释放的特定波长。

All the other wavelengths will emerge as either elliptically or circularly polarized light.

所有其它波长的光将以椭圆偏振光或圆偏振光出射。

At visible wavelengths, the strongest emission line in this pattern is in the red part of the spectrum and is known as "Hydrogen-alpha" or just H-alpha.

在可见光波段，特征谱线中最强的发射线是光谱中红端的部分，就是人们熟知的"氢—α"或"H—α"。

But the energy was concentrated in a spectacularly sharp line in the emission spectrum--in other words, the radiation was exceedingly uniform, consisting of a single wavelength with little contamination from other wavelengths.

但是能量被集中在发射谱中一条非常狭窄的谱线上。也就是说，辐射是极度均匀的，只包含有一个单一的频率，而没有其他频率的干扰。

Some sources emit only certain wavelengths and produce an emission spectrum of bright lines with dark spaces between.

有些光源只发射某些波长，产生的光谱是一些亮线，亮线之间则是黑的。

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 210 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2~(10)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着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。

show that multi-wavelengths laser output can be achieved through increasing phase-shifts number and the laser wavelength varies with phase-shifts magnitude in multi-phaseshifts fiber grating with equidistance.

结论表明：等分相移光栅可以通过增加相移个数来实现多波长的激光输出，相移量不同激光波长的输出也不同。

Moreover, the wavelengths of europium characteristic emissions were changed slightly.

稀土元素铕的高分子配合物可以发出特征荧光，如果在铕

The optimum experimental conditions were as follows: the excitation and emission wavelengths of the complex were 332 nm and 618 nm, respectively, pH=7.5, the concentration of europium ion was 1.2×10^(-5) mol/L, the surfactant concentration of SDBS was 3.0×10^(-5) mol/L.

最佳测定条件为：最大激发和发射波长分别是332和618 nm；pH=7.5；Eu(上标 3+)浓度为1.2×10^(-5) mol/L，SDBS浓度为3.0×10^(-5) mol/L。

The fluorescence excitation and emission wavelengths are 333 nm and 390 nm, respectively.

激发和发射波长分别为333 nm和390 nm。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了