煤矿水中总磷、氨氮、高锰酸盐指数含量的测定 流动注射-分光光度法
Determination of total phosphorus,ammonia nitrogen,permanganate index in coal mine water—Flow injection-spectrophotometry
2024-05-24
KA/T 1104-2014
煤矿低浓度瓦斯气水二相流安全输送装置技术规范
Technical rules for the security delivery device of gas-water two-phase flow of low concentration gas in coal mine