Standard practice for measuring practical spectral bandwidth of ultraviolet - visible spectrophotometers 紫外线-可见分光光度计的实用光谱带宽的测量
Standard practice for monitoring the calibration of ultraviolet - visible spectrophotometers whose spectral slit width does not exceed 2 nm 光谱狭缝宽度不超过2nm的紫外线-可见光分光光度计的校准监测的标准实施规程
The sols is bright yellow and stable during a month and a half . silver sols are charaterized by a transmission electron microscopy ( tem ) and ultraviolet - visible spectrophotometer ( uv ) . the result indicates that the silver particles are approximately spherical and monodispersed with an average diameter of ca . 15nm 溶胶呈亮黄色,贮存一个半月不发生凝聚,并用紫外分光光度计和透射电子显微镜对其研究,发现制得的纳米ag为球状粒子,粒径为15nm 。
The conventional methods of the gemmology and the modern instruments of electronic probe , ultraviolet - visible spectrophotometer , fourier transform infrared spectrometer , cathodoluminescence spectrometer are used to research and analyse the flux - grown synthetic spinel and compare them with the natural spinels 摘要采用常规的宝石学研究方法以及电子探针、紫外可见分光光度计、傅里叶变换红外光谱仪和宝石阴极发光光谱仪等现代测试仪器,对助熔剂法合成尖晶石的宝石学特征进行了全面分析,并与天然尖晶石进行了对比。