back-extract

基本解释

A solvent was used as gold extractant and a sort of compound back extract reducer was used for reduction at one step in normal temperature.
用某溶剂作为金萃取剂,用某复合反萃还原剂在常温条件下进行一步还原;将箱式混合澄清槽经改进后作为萃取器。
Calcium magnesium acetate(CMA)can be prepared by extraction of acetic acid from dilute acetic acid wastewater using trioctylamine and then by back extraction using dolomite lime.
用三辛胺萃取醋酸废水中的醋酸,加入白云石灰乳反萃,可制得环保型除冰剂醋酸钙镁盐(CMA)。
Rose bushes shoot again after being cut back.
玫瑰丛修剪後还能再长出新枝。
Complex extraction treatment of wastewater containing 2-amino-4-methyl-5-chlorobenzene sulfonic acid (CLT - acid) was studied using 7301 - 1 - octanol - H2SO4 - NaOH as extraction - back extraction system.
采用7301-正辛醇-H2SO4-NaOH化学萃取-反萃取体系对CLT酸废水进行了络合萃取处理试验。
He trudge three hour in the snow to get back home.
他在雪中跋涉三个钟点才回到家。