This paper describes the synthesis procedures and deuterium isotopic content characterization method, some of the process parameters have been discussed also.
介绍了氘代乙醛的合成工艺及其氘代率的表征方法，并对主要合成工艺参数等进行了探讨。
The precipitation isotopic content is one kind of national basic environmental data, indispensable for the environmental isotope scientific research, including environmental isotope hydrogeology.
大气降水的同位素含量是国家的一项基本环境数据，也是开展环境同位素科学研究和环境同位素水文地质工作必不可少的基础资料。
This paper discussed the relationship between solid content and density of aluminium hydroxide slurry and describes the measurement method and in situ applications of isotopic densitometer.
本文讨论了氢氧化铝料浆的固体含量和密度之间的关系及固体含量的密度检测方法。介绍了同位素密度计的现场应用情况。
Combining the isotopic dilution (ID) method with the on-line fractionation correction method, the rhenium content can be determined accurately at sub-nanogram level using the normal solution n.
溶液中加入铱元素进行铼同位素的质量分馏校正，在常规的溶液雾化进样条件下，采用同位素稀释法可准确测定纳克级的铼含量。
The result reveals that there is positive relationship between boron content and boron isotopic composition.
硼含量和硼同位素组成有正相关关系。
On-Line measurement of solid content in aluminium hydroxide slurry by isotopic densitometer.
应用同位素密度计在线测量氢氧化铝料浆的固体含量。
Surface soil samples were collected in the deserts and Gobi regions of China. The carbonate content and carbon and oxygen isotopic composition were analyzed.
在中国的主要沙漠和戈壁等粉尘源区采集了地表沙或土壤（统称为表土）样品，分析了样品的碳酸盐含量和碳酸盐的碳氧同位素组成。
The results showed as the following: The content of graphite as loading agent and the sequence of loading graphite and the sample to the filament affect the boron isotopic ratios.
具体结论如下：石墨发射剂的量和涂样顺序对硼同位素比值的测定有一定的影响。
The results showed as the following: The content of graphite as loading agent and the sequence of loading graphite and the sample to the filament affect the boron isotopic ratios.
具体结论如下：石墨发射剂的量和涂样顺序对硼同位素比值的测定有一定的影响。
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