CUSDT固相微萃取管可以从痕量或微量浓度把目标分析物提取出来。
Target analytes can be sampled from trace to neat concentrations using the CUSDT SPME syringe.
由相关系数和主成份分析，选择铁和铝作为沉积物中痕量金属浓度的均一化元素。
Based on correlation coefficients and principal component analysis, fe and al were selected as the concentration normalizer for the different trace metals.
原子吸收光谱法已证明是一种用于测定痕量的金属浓度的灵活多用的仪器。
Atomic absorption spectroscopy has proved to be a versatile tool in measuring concentrations of trace metals.
本文主要针对目前监测环境水体中痕量有机污染物浓度常使用的一些样品前处理方法和检测方法进行综述。
In this paper, it reviewed a few commonly used sample pre-treatment methods and detection methods in monitoring of trace organic pollutants concentrations in water environment for the current.
随着排放强度和气象条件的改变，痕量金属的月平均质量浓度也发生相应变化。
It is found that the mean mass concentrations varied from month to month due to changes in emission intensity and meteorological conditions.
这些提高使得质谱具有足够的精度来检测和定量多样化的蛋白，即使是在痕量的浓度水平下。
These improvements should allow sufficient accuracy for detecting and quantifying diverse proteins, even at low level of concentration.
法已证明是一种用于测定痕量的金属浓度的灵活多用的仪器。
Atomic absorption spectroscopy has proved to be a versatile tool in measuring concentrations of trace metals.
综述了近些年来国内外痕量气体浓度检测技术研究的最新进展。
The latest progress of trace gas concentration detection technology is reviewed.
在采用光腔衰荡技术实现痕量气体浓度测量时，设计了用于痕量气体浓度测量的比较式光腔衰荡气室。
The contrastable optical ring-down cavity micro-gas cell is designed for the trace gases concentration measurement used ring-down cavity method.
实验结果表明该方法可以在获取痕量气体浓度同时，并能精确反演气溶胶物理特性。
Experimental results show that trace gases and aerosol parameters can be successfully retrieved using this model.
实验结果表明该方法可以在获取痕量气体浓度同时，并能精确反演气溶胶物理特性。
Experimental results show that trace gases and aerosol parameters can be successfully retrieved using this model.
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