Methods and Results Through the reaction of alkylation of substituted phenols, hydrolysis and cyclization,“ vicarious nucleophilic substitution of hydrogen( VNS)” was used to synthesize4- hydroxyindole and4- methoxyindole, the method is simple and the cost is low.
方法通过取代酚的醚化,再在苯环上直接引入腈乙基,然后水解、合等反应,直接生成吲哚衍生物。
On Prevention of Risks in Introducing FDI after China s Entry of WTO;
加入WTO后我国引进外商直接投资的风险防范
Tendency of Direct Investment from the Foreign Business after China Entering the WTO;
加入WTO后我国吸引外商直接投资趋势研究
hierarchical indexed direct access method (HIDAM)
分层索引直接存取法;分级索引直接存取法;层次索引直接存取方法
Direct speech is easier than indirect speech.
直接引语比间接引语简单。
Change the sentences from indirect speech to direct speech.
把间接引语变成直接引语。
Turn the following sentences into direct Speech or Indirect Speech.
把下列句子变成直接引语或间接引语。
Change the direct speech of the following sentence into the indirect speech.
把下列句中的直接引语改成间接引语。
Change the following from direct speech into indirect speech.
把下列句子由直接引语改为间接引语。
Exploring How to Teach Direct and Indirect Speech;
“直接引语——间接引语”教学的探索与实践
These wastes are sluiced directly into streams, they may create severe downstream sediment damages.
这些废料直接排入河流，可以引起严重的下游泥沙危害。
The Function of Instructional Intervention in Vocabulary Enhancement Activities Through Reading;
关于在词汇附带学习中引入直接学习效果的研究
Policy Analysis on Industrial Sectors FDI after China s Entry into WTO;
加入WTO之后我国工业吸引外商直接投资的政策取向分析
On Influence upon China s Attracting Foreign Investment after the Entry of WTO;
论加入WTO对中国吸引外商直接投资的影响和对策
HIDAM (Hierarchical Indexed Direct Access Method )
分层索引直接存取法
Saybis commonly used with direct speech
多用以表达出直接引语
Direct and Indirect Speech-A Comparative Study of Japanese and English Speech;
直接引语和间接引语——日英引语比较探析
The performance of the receiver can also be good with the optimum filter bandwidth.
但理论分析表明这种接收机引入的灵敏度代价比直流耦合模式接收机高。