back-extract

基本解釋

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.
用某溶劑作為金萃取劑,用某復(fù)合反萃還原劑在常溫條件下進行一步還原;將箱式混合澄清槽經(jīng)改進后作為萃取器。
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.
用三辛胺萃取醋酸廢水中的醋酸,加入白云石灰乳反萃,可制得環(huán)保型除冰劑醋酸鈣鎂鹽(CMA)。
Rose bushes shoot again after being cut back.
玫瑰叢修剪後還能再長出新枝。
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化學(xué)萃取-反萃取體系對CLT酸廢水進行了絡(luò)合萃取處理試驗。
He trudge three hour in the snow to get back home.
他在雪中跋涉三個鐘點才回到家。