Reason analysis of unstable results for analysis of vanadium titanium cast iron sample by atomic emission spectrometry and improvement on sampling method;
钒钛生铁试样光谱分析结果不稳定的原因分析和取样方法的改进
On the Sampling of Imported Copper Metallurgical Slag and Preparation of Analytical Sample;
进口铜冶炼渣的取样及其分析试样的制备
New sampling and analysis method for dynamic end-point control at BOF process;
用于BOF过程中动态终点控制的新取样方式和分析方法(英文)
Research on sample-taking in the process of ironmaking;
高炉铁水取样问题的思考与研究
The building material at the construction site should be sampled in groups ; the sampling should have representative ; and the sampling amount and method should conform to standard requirement so that the quality of building material can be correctly evaluated .
施工现场建筑材料应按批次取样,取样应有代表性,并且取样数量和方法应符合标准要求,这样才能准确反映建筑材料的质量。
Sample integral is used to detect the phase difference.
这种方法首先利用对取样脉冲源对两路高频信号进行下变频,在保留相位不变的前提下将高频信号变到低频信号,再利用时域取样积分的方法对低频信号进行鉴相。