查询词典 absorption spectrum

As Mo's fly Dasher (formerly thermoelectric companies) important authorized distribution companies, the main products Overall S, M Series Atomic Absorption Spectrometry; IRIS Intrepid II Direct Reading the whole spectrum of plasma emission spectrometry; ARL 3460/4460 Direct Reading spectrometer; ARL 9900 Series X, ARL Advant X Series X-ray fluorescence spectrometer

作为赛默飞世尔原热电公司）公司重要的授权经销(代理商，主要产品总括S 、M系列原子吸收光谱仪；IRIS Intrepid II 全谱直读型等离子体发射光谱仪；ARL 3460/4460直读光谱仪；ARL 9900 系列 X、ARL Advant X 系列 X射线荧光光谱仪。

As Mos fly Dasher (formerly thermoelectric companies) important authorized distribution companies, the main products Overall S, M Series Atomic Absorption Spectrometry; IRIS Intrepid II Direct Reading the whole spectrum of plasma emission spectrometry; ARL 3460/4460 Direct Reading spectrometer; ARL 9900 Series X, ARL Advant X Series X-ray fluorescence spectrometer.

作为赛默飞世尔原热电公司）公司重要的授权经销(代理商，主要产品总括S 、M系列原子吸收光谱仪；IRIS Intrepid II 全谱直读型等离子体发射光谱仪iCAP 6000；ARL 3460/4460火花直读光谱仪；ARL 9900 系列 X、ARL Advant X 系列 X射线荧光光谱仪。

The properties of the Yb〓 and Dy〓, which has important value on researching and application, are studied by measuring the absorption and emission spectrum.

然后通过测得的掺Dy〓和Yb〓的氟锆酸盐玻璃的吸收和发射光谱，对具有重要研究和应用价值的稀土离子Yb〓和Dy〓进行了研究。

Based on a series of signal process and noise source identification techniques, especially the major noise source identification methods, such as expurgation method, sound intensity analysis, spectrum analysis vibro-acoustic correlation analysis and so on, the pass-by noise control of SC7080A and SC6360B are studied in detail. By the roadway and dais experiments, the major noise and radiating parts are identified and some economical controlling methods are made. For the SC7080A, to control the emissing noise from the intake and shell vibration of air cleaner, a intake muffler is installed between the air cleaner and intake valve. Based on the theory of Helmholtz resonator, One three-parallel-connected resonant silencer is designed and trial-manufactured. For the SC6360B, the attenuation performance of exhaust muffler in high frequency region is improved. To reduce the vibration noise of shell part, the structure of oil sump tank, exhaust manifold shield and exhaust manifold shield are analyzed and improved. At the same time, some measures, such as sound absorption, sound insulation, are taken to reduce the noise of engine surface emissivity and a sound shield is designed.

本文首先综述了目前国内外汽车加速噪声控制的现状、主要方法和技术措施，在此基础上，结合SC7080A和SC6350B汽车的车外加速噪声水平及现状，综合运用分别运行法、声强法、频谱分析法、声振相干函数法等现代噪声源识别方法，对SC7080A和SC6360B汽车进行了准确详细的车外加速噪声源识别并提出了经济可行的控制方案，针对SC7080A，主要在空气滤清器和进气阀门之间的进气管道上加装进气消声器，抑制空气滤清器壳体表面和进气口两处的噪声辐射，根据Helmholtz共振腔原理设计了三腔并联旁支型共振消声器，并进行了工程化设计和试制；针对SC6360B，主要改善了排气消声器在高频段的消声性能，对罩壳类零件进行了结构改进，降低了其表面噪声的辐射，并对发动机舱进行了吸声、隔声处理，设计了发动机隔声罩。

After 2 months, the samples of skin, scale, head and fm ray of the carps were selected for the subsequent analysis of determining their total carotenoid contents and the absorbance values, so the above solutions were evaporated to dryness, and then were measured by the thin layer chromatography. The results show that the spectrum of total pigment of koi carp had two absorption peaks in visible light (454 nm and 470 nm). The growth rate, weight gain and specific growth rate of red-white of koi carp fed with 1.0 g/kg β-carotene tended to be obviously higher than the control group (P.05), while the FCR of groups fed with 1.0~2.5 g/kg β-carotene was significantly lower than the control group (P.05). The colouring of red-white and red region in koi carp was the best at 1.5~2.0 g/kg β-carotene in diet, while the n-carotene added in the diets did not have any effects on total carotenoid concentration of skin/scale of white region. The n-carotene mainly deposited in skin and fin ray. And it mainly transformed into astaxanthin in koi carp.

结果表明，红白锦鲤总色素光谱在可见光区（454nm和470nm）有两个吸收峰，β-胡萝卜素在1.0g/kg组的增长率、增重率、特定增长率显著高于对照组(P.05)，1.0~2.5g/kg各组的饵料系数均显著低于对照组(P.05)；对于鲤的红白和红色区域，β-胡萝卜素的添加量为1.5~2.0g/kg时，对红白锦鲤体色的增色效果最好：β-胡萝卜素对红白锦鲤白色区域总类胡萝卜素的含量影响很小；β-胡萝卜素在红白锦鲤体内的主要沉积部位是皮肤和鳍条；β-胡萝卜素在红白锦鲤体内主要转化为虾青素。

The acetylation-induced changes in spectra with respect to UV/VIS absorption, RAMAN and Flash Kinetic Spectrum of purple membrane were determined in a wide range of wavelength and PH.

中国科学院生物物理所，北京 100101摘要：在很宽波长和pH范围内用紫外及可见区光吸收、圆二色及共振拉曼测定了酰化诱导的紫膜溶液的光谱变化。

The anti-darkening abilities increase as following order: flint glass By using multiphoton absorption ionization and spectrum broadening theories and according to the experimental results, the mechanisms of 800nm femtosecond laser induced darkening in the glasses were demonstrated.

同时，测试了各种玻璃在1064nm的纳秒和皮秒激光照射下的光致暗化现象，结果表明，玻璃在这两种激光的作用下不产生光致暗化。

Based on the theory about hydrogenous mineral's absorption of near infrared spectrum, the article introduces the design principium and method as well as the guideline test and software module of BHKF-1 near infrared mineral analysis instrument.

摘 要 基于含氢基团的矿物对近红外光谱吸收作用的理论，介绍BHKF-1型近红外矿物分析仪的仪器原理、设计方法及其指标测试，以及软件模块，详细阐述矿物定性分析和定量分析方法，通过岩芯和剖面样品光谱数据建立模型，数据处理结果反映的地质情况，与所测矿床实际情况相符，证明仪器的有效性，可以在地质工作中发挥重要作用。

Choose the 890nm infrared LED as the light source after compared the capabilities of incandescent lamp/tungstic lamp and LED/LD and also think about the selective absorbability of water; it has strong points such as constant light intensity,long life, narrow light spectrum,etc, and use the infrared light with 890nm wavelength to decrease the influence of optical-absorption matters.Choose the photosensitive diode which suitable to the LED which we choosed after compare the capabilities of light sensitive resistor, photocell, photosensitive diode and phototriode. Both of these make up the photoelectric system of turbidimeter.

通过比较白炽灯／钨灯和发光二极管／激光二极管的各项性能指标，考虑到水对光线具有选择性吸收作用，选择890nm的红外发光二极管作为浊度仪的发光器件，其有发光光强稳定、寿命长、发光光谱窄等优点，且用波长大于800nm的红外光进行测量可以大大减小水中光吸收物质的影响；通过对光敏电阻、光电池、光敏二极管和光敏三极管等光敏器件的各项性能的分析与比较，选择响应时间短、输出特性线性度好的光敏二极管作为光接收器件，并与红外发光二极管相配套，构成浊度仪工作的重要系统——光电系统。

In the gas-liquid phase reaction of catalytic oxidation of mesitylene by air to synthesize trimesic acid and the related process,an analysis method of reaction components was proposed,which includes chromatographic analysis,mass spectral analysis,IR spectrum,atomic absorption spectrophotometer and chemical titration for the purpose of analyzing reaction groups.

针对均三甲苯气液相催化空气氧化合成均苯三甲酸的反应及相关的工艺过程中，反应产物均苯三甲酸的分析问题，提出以色谱分析、质谱分析、红外光谱分析、原子吸收光谱分析及化学滴定为主要分析手段对反应组分进行分析，重点研究并建立了相关的分析方法。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。