背景含量 meaning in Chinese
background level
Examples
- A study on geological and geochemical characteristics of rock , soil , water and main edible plants in ecosystem , it is shown that iodine deficiency disease was an epidemic disease of deficiency of iodine in geological environment , and then deficiency of iodine in ecosystem , causes of human body deficiency of iodine
摘要为了探讨贵州碘缺乏病与生态环境关系, ，对贵州碘缺乏病区岩石、土壤、水及主要粮食作物碘背景含量进行调查研究。