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- 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)。
- 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。
- 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。
- Liquid phase microextraction with back extraction 液相微萃取／后萃取
- Liquid-phase microextraction with back extraction 液相微萃取-反萃取
- Rose bushes shoot again after being cut back. 玫瑰丛修剪後还能再长出新枝。
- 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。
- The crowd fell back to let the players through. 人群后退让运动员们通过。
- Do exercise every day and you'll be back in condition. 每天锻炼锻炼，你很快会恢复健康的。
- The ship beat back against a monsoon. 船逆着季风艰难地行驶。
- Keywords reversed micelles;back extraction;kinetics;lipase; 反胶团;反萃取;动力学;脂肪酶;
- I flap the flies away but soon they fly back. 我把苍蝇赶走，但一会儿又飞回来了。
- I never lend books; you never get them back. 我的书决不外借，因为总是有去无回。
- She leaned her head back and whispered the news. 她向后仰着头，小声说出了这个消息。
- The talks have been put back to Friday morning. 谈判推迟到星期五早上进行。
- He hated to tuck his tail and back down now. 他讨厌此时夹着尾巴退回来。
- After a long coma the sick man slowly came back. 昏睡了好久以后，那个病人慢慢地恢复了活力。
- Back in Nigeria we used to play a lot of tennis. 我们以前在尼日利亚经常打网球。
- The crowd fell back to let the ambulance through. 人群往后退，让救护车通过。
- The teacher get a raspberry as she turn her back. 该教师转过身去时有人用舌与唇发出嘲笑她的声音。
