“methods of sampling”的概念、定义、翻译、参考文献-科学参考

单词	methods of sampling
释义	methods of sampling Encyclopedia 理学【试剂和试样】释 methods of sampling试样准备包括取样和试样制备两步。前者是指从大量物料（分析对象的总体）中取得其中有代表性的一小部分，即在误差允许范围内，这一小部分试样应能代表大量物料的组成。后者是把按一定程序取得的仍然颗粒较大的试样，经过破碎、缩分、研磨、过筛等步骤，制备成适合于作分析用的试样。
随便看	chromatographic data system chromatographic fingerprint chromatographic instrument for rock & mineral analysis and test chromatographic media chromatographic peak chromatographic refolding chromatographic resin chromatographic resolution chromatographic separation chromatographic workstation chromatographic workstation(Data System) chromatography chromatographyatomic absorption spectrometer chromatography-atomic absorption spectrometry hyphenated analysis for pharmaceuticals chromatography-atomic emission spectrometry hyphenated analysis for pharmaceuticals chromatography-atomic fluorescence spectrometry hyphenated analysis for pharmaceuticals chromatography-atomic spectrometry hyphenated analysis for pharmaceuticals chromatography electrochemical method chromatography-electrochemical method chromatography, expert system on chromatography gas composition measurement chromatography gas logging chromatography-infrared spectrum hyphenated analysis for pharmaceuticals chromatography in polymer characterization chromatography-mass spectrum hyphenated analysis for pharmaceuticals

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。