查询词典 spectrometer

In this thesis, the performances of liquid crystal display with different backlight light sources were analyzed by the optical spectrometer. The backlight sources included three different kinds of white light-emitting diodes and a traditional cold cathode fluorescent lamp.

中文摘要本论文利用光谱分析仪量测不同背光源与液晶面板搭配的显示特性，著重在色彩方面的探讨，所使用的背光源有三种不同的白光LED：1。

Digitization is a trend which can be applied in MRI spectrometer with high performance and low cost.

应用数字化技术是谱仪发展的一个重要方向，它在提高谱仪的性能和功能的同时，还简化了谱仪结构，降低了设计成本。

Townes, who turns 94 in July, plans to continue monitoring Betelgeuse in hopes of finding a pattern in the changing diameter, and to improve the ISI's capabilities by adding a spectrometer to the interferometer.

在参宿四质量流失的过程中，其体积处于膨胀状态，密度也变得非常低，目前这颗恒星的密度仅是地球空气密度的10亿分之一。

The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements.

近20年由於「气相同位素比值质谱仪」的改良和氢、氧、碳、氮和硫等稳定同位素的广泛研究，稳定同位素的研究技术已实质增加我们对於这些元素在自然生態系中生地化循环的瞭解。

X-ray fluorescence spectrometer is used to measure F,Aluminum,Na,SiO2,Fe2O3,SO2-4,P2O5 and CaO elements in cryolite after sample is made by powder press sheet with boracic acid at sides and bottom,showing quicker and precise analysis.

采用粉末压片，硼酸镶边垫底的制样方法，用波长色散X射线荧光光谱仪测定冰晶石中的F、Al、Na、Si O2、Fe2O3、SO42-、P2O5、CaO等8个成分。

After mainenervations being drawn out and being dried for 4 hours at 60℃,1156 samples of tobacco leaves from different tobacco producing-area were made into powder (≤0.13 mm). Reducing sugar, total sugar, nicotine, nitrogen, potassium and chlorine of more than 1000 samples from different tobacco producing-area were determined with classical chemical or instrumental methods. By scanning these samples with Fourier transform Near Infrared spectrometer (MARIXT-I produced by Bucker) we obtained their spectrograms, pretreated the spectrograms with a chemometrics software (OPUS 5.5) to debase the noises influence on spectrum information, and built a chemometrics model by means of Partial Least2Squares. The chemometric model was optimized some times and validated with some other samples.

选取全国不同烟草生产地区的1156余烟叶样品，采用相同的预处理条件(去处主脉，60℃烘干4小时)，处理成40目待测粉末样品，采用行业经典的化学分析方法或准确可靠仪器方法测定其常规成分含量，在条件一致(20℃～24℃，环境湿度≤40 RH%)的实验室环境中，使用市场上主流的傅立叶变换红外光谱仪(德国BRUKER公司生产的MARIXT-I)上进行图谱扫描，采用OPUS5.5化学计量学软件，对光谱进行适当的预处理，减弱以至于消除各种噪声对光谱信息的影响，用偏最小二乘回归法建立常规成分预测模型，并进行了反复优化和未知样品模型外验证。

Chapter 4: Building and test of Fourier transform near infrared spectrometer.

第四章傅立叶变换近红外光谱仪的搭建与测试。

This paper describes the implementation of CBLT for the electromagnetic calorimeter electronics system of Beijing Spectrometer III.

介绍了采用虚拟全局缓存技术的CBLT读出方式在北京谱仪电磁量能器读出电子学中的应用。

The residue obtained by pyrolyzing different time was analyzed by elementary analyzer and particle analyzer; Liquid produced by extracting the residue for 24h with Soxhlet extractor through toluene and carbon bisulfide were also resolved by gas chromatography and mass spectrometry, ultraviolet-visible spectrophotometer and Fourier transform infrared spectrometer.

实验首先对煤进行热解，然后对作用不同时间的煤热解残渣进行元素分析和粒度分布分析，并用有机溶剂甲苯和二硫化碳对热解残渣采用索氏提取器抽提24 h，将所得提取液采用紫外-可见光谱仪、红外光谱仪和气质联用仪等手段进行表征。

Firstly,The crosslink of sodium caseinate and whey protein isolateat three different conditions using transglutaminasewas studied.The extent of polymerization was detemined by SDS-PAGE、electron microscope and infrared spectrometer associated with gel image analysis.

通过对各组分蛋白相对光密度值的变化分析可知：在本实验所选条件下，在80℃预热15min后并再加入一定量还原剂(20mmoL/LDTT)变性条件下，酪蛋白和乳清蛋白之间可以交联；为进一步验证上述结论，通过中红外光谱仪和电子显微镜进一步分析交联前后蛋白质的二级结构的变化和交联前后蛋白质空间结构上的差异，结果分析均与上述结论相吻合。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。