This standard specifies the requirements for wavelength from visible light to short wave infrared spectral reflectivity measurement of urban surface features,including the terms and definitions,measurement condition,measurement basic requirement,measurement special requirement,measurement record,measurement data processing and measurement summary.
This standard is applicable to obtain spectral reflectivity data of typical features in urban areas that have been developed for nonagricultural land in the wavelength range of 380 nm to 2 500 nm.
定价: 432元 / 折扣价: 368 元 加购物车
This standard specifies the methods and requirements for determination of precious metals in jewellery by the X-Ray fluorescence spectrometry(XRF)method.
This standard is applicable to the qualitative analysis of jewellery and other crafts as well as screening detection of contents of precious metals(incl.gold,silver,platinum and palladium).
定价: 516元 / 折扣价: 439 元 加购物车