通过环氧化和氧化就得到外消旋的含十八个碳的昆虫返动激素.Epoxidation and oxidation gave the racemic C 18 - juvenile hormone.发现旋光基质有外消旋作用.Racemization is found with optically active substrates.外消旋体是不旋光的.The racemate is optically inactive....
The average commuter journey there is five hours long.那里的通勤一族平均上下班要花5个小时。I think I've got one of the most stressful jobs there is.我想我得到的这份工作是其中最繁重的工作之一。There is no suggestion that clients have been sold inappropriat...
A recurrence of such an oversight could impair our amicable relations.这样的疏忽倘若再发生,可能有损双方的友好贸易关系.Objective: Study on prevention of gallbladder stone recurrence by Lidan Jianpi afterextraction mini - invasively by choledoch...
一位丹麦思想家曾说过,我们的生活是向前的, 但是我们的认识却是向后的.We live forwards, a Danish thinker has said, but we understand backwards.这样补偿了当激波产生时升力向后的运动.This compensates backward movement of the lift forces as shock waves develop.运动员以向前的姿势起跳,向上、向...
She's got lots of friends, she likes to socialize.她喜欢与人交往, 所以有许多朋友.Care-givers get a chance to socialize with men and women who are in the same position as themselves.护理员有机会和从事同样工作的人交往。"Do you think it's a good...