查询词典 ultraviolet

But they glow red under ultraviolet light, and the dogs' nails and abdomens, which have thin skins, look red even tothe naked eye.

这四只狗都取名为&Ruppy&（&ruby&和&puppy&的合成词），在正常光条件下，它们看起来和普通的比格猎犬没什么差别。

Based on studies on the characteristics of ultraviolet-visible absorption spectra, ESR and ~(13)C NMR spectra, the three dimensional fluorescence spectra of natural and treated ambers with fluorescence are studied by using the three dimensional fluorescence spectrophotometer.

基于紫外可见吸收光谱、ESR和13C NMR谱的研究基础，以三维荧光分光光度计为主要测试分析方法，对具有荧光性质的天然与处理琥珀的三维荧光光谱进行了剖析。

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。

The paper is composed of two parts:In the first part, the photo-reaction of amides irradiated by 254 nm ultraviolet light is investigated.

本论文主要分两部分：第一部分主要对酰胺类化合物在254 nm紫外光激发下的光化学反应进行了研究。

Scientists combined ultraviolet images of the auroras, taken by Hubble over a period of days, with visible-light images of the ringed planet.

科学家合成了紫外线图像的极光，采取了由哈勃天文望远镜在过去一段日子，与可见光图像的环状的行星。

At a first glance, these beagles may look like typical dogs. But they glow red under ultraviolet light.

咋一看上去，这些小猎犬和普通的狗无异，但是在紫外光的照射下变红了。

Berets, in addition to the design of the hot Yanyanxiari can block the ultraviolet light, but also allows you to look the more sweet.

6贝雷帽的设计除了可以遮挡炎炎夏日的热辣紫外线，还能让你看起来更加的甜美。

Redheads might be more susceptible to skin cancer than brunettes because of differences in the way ultraviolet light affects human pigments.

红色头发的人比深色头发的人更容易得皮肤癌，因为紫外线对不同的人体色素有不同的影响。

We see in red, green and blue, but budgies have a fourth cell in their eye, that enables them to see ultraviolet.

我们看到红色、绿色和蓝色，但相思鹦鹉眼中有第四种细胞，能让他们看到紫外线。

The analyses showed that male and female buntings differed in ultraviolet chroma of yellow and white plumage which looked so similar by human eyes.

中文摘要：在国内首次利用光纤光谱仪对鸟类的羽色进行量化和分析。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐