您要查找的是不是：
- In this review the recent advances in this field are summarized and the catalysts using C, N, P and S as the nucleophilic center are surveyed. 摘要总结了近几年来经过极性反转的有机催化的研究近展，概括了以C，N，P，S为中心的各种亲核催化剂的催化机理及催化性能。
- Keywords azo-reaction;electrophile;nucleophilic center;nitrous acid hydrogen ion; 重氮化反应;亲电性进攻试剂;亲核中心;亚硝酸氢合离子;
- He moved the table over to the center of the room. 他把桌子移到房间中心。
- The land is destined for a new shopping center. 这块地已被划作为营建一个新购物中心之用。
- His activities in London center around this spot. 他在伦敦的活动以这个地点为中心。
- The strikers paraded through the city center. 罢工队伍游行穿过市中心。
- A system of roads radiates from the town center. 一个道路网从镇中心向四面八方伸展出去。
- The new hospital will be sited at the city center. 新医院将座落在市中心。
- New York is a great financial center. 纽约是一个重要的金融中心。
- The center of the sun is exceedingly hot. 太阳的中心极其热。
- Our city is the industry center of the country. 我们城市是全国的工业中心。
- They made a detour to avoid the town center. 他们绕道而行,避开市中心。
- A circle without a center is inconceivable. 一个没有圆心的圆是无法想像的。
- We decided to skirt round the town center. 我们决心绕过市中心。
- To avoid the city center, turn right here. 如果要避开市中心，请从这里向右转弯。
- nucleophilic center 亲核中心
- The company owns a famous department store in the center of London. 这家公司在伦敦市中心拥有一家很有名气的百货商店。
- A center of interest or activity. 中心兴趣或活动的中心
- Not situated at or in the geometric center. 离心的不位于或在几何中心的
- Farther than another from the center or middle. 远离中心的比在中心处或中间的一个更远的
