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- Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts. 大多数连于芳核能被直接取代的基团仅限于重氮盐。
- Railways serve a different purpose to roads, and cannot be seen as a direct substitution. 铁路与道路的功用不尽相同,所以铁路不能直接替代道路。
- Pollution of the environment, but direct substitution gasoline, diesel oil clean automobile part and mechanical part. 不污染环境，可直接取代汽油、柴油清洗汽车元件及机械元件。
- Then the method of combining the direct substituting with orthogonal test for worst case analysis is presented, and the detailed algorithm process is represented. 提出了利用直接代入法和正交试验相结合的方法辅助最坏情况进行分析,并给出了详细算法流程。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- He has chosen the most direct route. 他选取了最直的路线。
- She's very direct, believes in speaking her mind. 她为人直率，喜欢有什么说什么。
- Can you direct me to the shoe department? 请告诉我卖鞋部在哪里。
- Be there a direct train for Beijing to Nanning? 从北京到南宁有直达车吗？
- Progress of Synthesis of Vinyl Chloride Process from Direct Substitution Chlorination of Ethylene 乙烯直接取代氯化合成氯乙烯的研究
- Study on synthesis of Ag coating Cu bimetallic nano-powders by direct substitution reaction 直接置换法制备包覆型纳米铜-银双金属粉末
- See that direct heat does not play on it. 当心别让它直接受热。
- It's a long way by road the train is more direct. 走公路很远--乘火车近。
- Would you please direct me to the zoo? 请问去动物园怎么走?
- My eyes were blinded by the direct rays of light. 在光线的直射下，我看不清楚东西。
- Her opinions are the direct opposite of mine. 她的意见与我的截然相反。
- She is in direct contact with the general manager. 她与总经理直接联系。
- I'm in direct contact with the hijackers. 机者保持著直接的联系。
- The army is under the king's direct command. 军队由国王直接统率。
