Isopentyl lactate was synthesis from acid and isopentyl alcohol in the presence of ferric chloride hexahydrate.在六水三氯化铁存在下可以由乳酸和异戊醇合成乳酸异戊酯.Ferric Chloride alone gives polymer with benzene.三氧化铁可单独催化苯的聚合.The ferric acetylac...
His elder sister had been his guide,counselor,and friend.他姐姐过去一直指导他,给他出主意,是他的朋友。Your first step should be to talk to a teacher or school counselor...你第一步应该是去找老师或学校辅导员谈谈。The counselor bilked his clients out of$2 million.那...