| 1. | Studies of catalysts for methane aromatization the reaction performance and surface property of mo - m hzsm - 5 catalysts under oxygen - free conditions
担载型钼催化剂上的丙烷芳构化 |
| 2. | However , the case study show , that tinder barrier - free condition the perforated degree is used to being lower and resulting in lower flow rate of well
通过实例计算，在无隔板的情况下，油井的打开程度都较小，产量也较小。 |
| 3. | As our best known , this is the first experimental measurement of so high hot electron temperature at moderated intensity , pre - pulse free condition
据我们所知，这是第一次报道在10 ~ ( 16 ) w cm ~ 2 、无预脉冲条件下，实验测量到这么高的超热电子温度。 |
| 4. | This paper suggests the method of testing at free conditions on the basis of investigation on the inspection and repair of packaged air conditionning unit in rolling stock units
针对车辆运用部门空调机组性能检修测试遇到的问题，提出了非控工况测试方法。 |
| 5. | Acetylation between alcohol and benzoyl oxide was carried out using znbr2 as a lewis acid catalyst in solvent - free condition . some structures were characterized by nmr and ir
以溴化锌为催化剂，在无溶剂条件下实现了醇与苯甲酸酐的酰化反应，部分产物经nmr和ir表征。 |
| 6. | Acetylation between alcohol and benzoyl oxide was carried out using znbr2 as a lewis acid catalyst in solvent - free condition . some structures were characterized by nmr and ir
摘要以溴化锌为催化剂，在无溶剂条件下实现了醇与苯甲酸酐的酰化反应，部分产物经nmr和ir表征。 |
| 7. | A variety of aldehydes were converted into acylals in good yields with anhydride in the presence of a catalytic amount of zinc bromide under solvent - free conditions
以醛和酸酐为原料，溴化锌为催化剂，无溶剂条件下高产率地合成了偕二酸酯（其中醛与苯甲酸酐的反应是首次报道） 。 |
| 8. | A variety of aldehydes were converted into acylals in good yields with anhydride in the presence of a catalytic amount of zinc bromide under solvent - free conditions
摘要以醛和酸酐为原料，溴化锌为催化剂，无溶剂条件下高产率地合成了偕二酸酯（其中醛与苯甲酸酐的反应是首次报道） 。 |
| 9. | The modified algorithm can work well in the presence of gaussian noise , which conquers the disadvantage of using ica only considering noise - free condition before
修正fastica算法通过在对比函数中引用变量的高斯矩而对高斯噪声做以一定的处理,克服了以前引用ica时均不考虑环境噪声的弊端。 |
| 10. | Nh2so3h was used to efficiently perform one - pot , three - component , biginelli condensation reactions of aldehydes , - ketoesters and urea under solvent - free conditions at room temperature by grinding method
摘要以nh2so3h为催化剂，室温无溶剂条件下，研磨芳醛、 -酮酸酯和尿素合成了一系列1 , 2 , 3 , 6 -四氢嘧啶2 -酮衍生物。 |
