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The effects of various reaction conditions were studied by GC analysis. Reaction time has slight effect on the conversion of acenaphthene. The selectivity of N-phenyl aminoacenaphthene increases with reaction time. Biacenaphthenyls or N-phenyl aminoacenaphthene is in the majority, 77.6% or 90.2% when the molar ratio of AlCl3 to acenaphthene is 1.2 and 2.4 respectively.
GC考察了不同反应条件对苊转化率和产物选择性的影响,时间对苊转化率影响不大,N-苯基氨基苊的选择性随着时间增加而增大;随着AlCl3用量的增加,苊转化率和N-苯基氨基苊的选择性随之增加;AlCl3与苊的摩尔比为1.2和2.4时,产物中联苊和N-苯基氨基苊的选择性分别达到77.6%和90.2%。
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Not all of Acer's phones clear this bar.
并非所有的宏碁手机都达到这一标准。
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Acetanilide was annealed at 130℃,it was reached at about 30min.
时,在130℃热处理,约30min时就达到平衡状态。
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So if you are the acetate or electric company, you'll need to be as nimble as I am if we are to work together.
所以,如果你是醋酸盐树脂公司或者电力公司的话,你就需要达到和我一样的灵活度,否则我们就无法共事了。
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The results showed that the Mulberry fruit surface carried large numbers of yeast but little other mixed fungi; ethanol fermentation reached the peak value in 48h'; before vinegar production the acetification bed breeding took 9~10d, but the vinegar fermentation cycle was only about 24h during production .
结果表明,桑椹果实表面携带有大量的酵母菌而几乎不带其他杂菌,酒精发酵醪除含有大量的酵母菌之外未发现有其他杂菌,酒精度在发酵 48h 时达到高峰;桑椹醋生产前的醋酸菌床培育需要9~10d 时间,投入生产后醋酸发酵周期仅需要24h ;桑椹醋总黄酮含量高达6.68 mg/mL ,对 DPPH 自由基的清除作用远高于山西陈醋、镇江香醋和山楂果醋,具有良好的抗氧化作用;利用桑椹醋自身色素颜色变化可判断酸度测定时酸碱滴定终点。
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The results showed that the mulberry fruit surface carried large numbers of yeast but little other mixed fungi; ethanol fermentation reached the peak value in 48h'; the acetification bed breeding took 9~10 d before vinegar production, but the vinegar fermentation cycle was only about 24h during production.
结果表明,桑椹果实表面携带有大量的酵母菌而几乎不带其他杂菌,酒精发酵醪除含有大量的酵母菌之外未发现有其他杂菌,酒精度在发酵48h时达到高峰;桑椹醋生产前的醋酸菌床培育需要9~10d,投入生产后酷酸发酵周期仅需要24h;桑椹醋总黄酮含量高达6.68mg/mL,对DPPH的清除作用远大于山西陈醋、镇江香醋和山楂果醋,具有良好的抗氧化作用;利用桑椹醋自身色素颜色变化可判断酸度测定时酸碱滴定终点。
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Through the orthogonal experiment, the optimum condition for tagatose synthesization was determined to be 0.02 mol/L calcium chloride, 30 min, acetum neutralization.
通过正交设计实验优化反应条件,最终确定以0.02 mol/L的CaCl2为催化剂,反应时间30 min,用醋酸中和金属氢氧化物D-塔格糖复合物时,D-塔格糖的产率最高,可达到49.05%。
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An acetylene torch reaches about 6,000 F (3,300 C), hotter than combustion of any other known gas mixture.
乙炔氧焰最高可达到火焰温度6,000℉(3,300℃),比所有已知可燃混合气体都高。
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Are you going to ach...
你打算怎样达到目的?
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Work hard,and you will ach ie ve your goal.
好好干,你就会达到自己的目标。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。