N-pyrrolidone extraction N 甲基吡咯烷酮抽提
extraction n thimble 浸出用滤纸筒 ; 抽提套管
extraction n apparatus 提取器 ; 抽提器
extraction n turbine 抽气式汽轮机 ; 抽汽式汽轮机
extraction n indicator 抽提指示剂
extraction n fractionation 提取分级
extraction n condensing turbine 凝汽抽汽式汽轮机 ; 抽汽式凝汽汽轮机
extraction n fan 抽风机
The extraction results showed that among the solvents, n, N-dimethylformamide (DMF) was better than dimethyl sulfoxide, ethyl cyanide and methanol.
试验发现，溶剂n, N -二甲基甲酰胺(DMF)的萃取效果优于二甲亚砜、乙腈及甲醇。
Recent progress of primary amine N1923 research is summarized . Extraction mechanism is analyzed and influence on primary amine N 1923 extraction are discussed from various aspects.
本文总结了近年来伯胺N1923的研究进展，分析了萃取机理，从不同角度讨论了影响伯胺N1923萃取因素。
The electrolytic liquor can be repeatedly used over 8 times by regeneration after (extraction) by n-hexane and adsorption by activated carbon.
电解液经正己烷萃取和活性炭吸附可再生循环使用8次以上。
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