查询词典 spectroscope

This paper discusses how to use a quadrupole mass spectroscope to analyzed the whole process of thermal cleaning before the activeness of GaAs photocathode,thus the temperature and technique of the optimal thermacleaning is determine.

本文采用四极质谱仪对GaAs光电阴极激活前的热清洗过程进行分析。确定了最佳的热清洗温度及热清洗工艺，较好地解决了GaAs光电阴极激活前的热清洗工艺问题。

A Schottky precise mass spectroscope in light-medium and in heavier nuclei with the mass resolution of △m/m=5×10^(-6) or 5×10^(-7), respectively, has been successfully built up and operated well at ESR (Experimental Storage Ring cooled by electron beam) in GSI, the leading nuclear research institute.

肖特基精密质量谱仪，是建立在GSI所电子冷却存储环上的精密质量谱仪，它对轻中量核与重核的测量精度△m/m分别达到5×10^(-6)，和5×10^(-7)。

In order to separate trace plutonium from uranium matrix for subsequent mass spectroscope determination of the former,an extraction chromatographic method composed of a TBP extraction resin column and a cationic exchange resin column was developed.

为了从铀基体中分离痕量钚，采用由TBP色层柱和7402季铵盐色层柱组成的萃取色层法及低本底α谱仪对模拟铀样品中铀钚分离方法进行了研究，并确定了分离流程的条件；对影响流程分离效果的主要因素，如料液和洗涤液酸度、流速、解吸液浓度等进行了研究，确定了最佳分离流程。

Methods: By using solid phase extraction and gas chromatography/mass spectroscope ,main Phthalate esters in surface water samples from the urban rivers and ponds in suburb were determined.

采集市区河水和市郊鱼塘水，固相萃取法富集水样，气-质联机测定水样中PAEs浓度。

In order to disclosure the reason why the electrocatalysis activeness and selectivity droped after being used several hundred hours continuously, the x-ray diffraction, scanning electron microscopy and energy dispersive spectroscope have been used to characterize the surface condition variations of Monel metal. The results indicated: Monel metal belongs to the Cu-Ni alloy around the electrolysis experiment.And after being used for 600hr, the surface layer element composition and geometry distribution of the alloy changed, namely in the alloy the Cu element /which superficial free enthalpy was smaller,"concentrated" to the alloy surface,and formed one kind of marble structure microcrystallite.Thus the electrode surface becamed rough a

为了揭示蒙乃尔合金阴极在连续使用数百个小时后电催化活性剂选择性下降的原因，采用X射线衍射仪、电子扫描电镜和电子能谱分析仪对电解实验所用的蒙乃尔阴极材料在电解实验前后的表面状态进行了表征，结果表明：所使用的蒙乃尔合金阴极材料在电解实验前后均属于Cu-Ni合金，使用600hr后，由于表面层元素组成和几何排布发生了变化，即合金中表面自由焓较小的Cu元素向合金表面&富集&，形成一种大理石结构的微晶，表面粗糙、不均一，这是造成其对硝基苯电还原的催化活性及选择性随着使用时间延长而逐渐下降的主要原因，同时也为此类电极的修饰改进提供了方向。

The gemmological and mineralogical characteristics of the different coloured tourmaline samples from Minas Gerais State, Brazil, are studied by using the electron microprobe, X-ray photoelectron spectrometer, ultraviolet-visible spectrophotometry and Fourier transform infrared spectroscope.

利用电子探针、X射线光电子能谱仪、紫外－可见光光度计和傅里叶变换红外光谱仪对产自巴西Minas Gerais地区、不同颜色的彩色电气石样品进行了宝石矿物学特征研究。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。