Polystyrene-supported N-benzyl-N-alkyl-aminopyridine was prepared through chloromethylated polystyrene treated with 4-aminopyridine and alkylation agents.

The yield of benzyl chloride based on toluene was 92 % under proper conditions.

在适宜条件下,甲苯生成氯化苄的收率可达92%.

By using sodium hydrogen sulfate as the catalyst , benzyl alcohol and propionic acid reacted to propionate.

选用乙醇和水作为溶剂,实现亚硫酸氢钠对异氰酸酯的良好封闭.

Under the optimum reaction conditions, the yield of benzyl propionate could reach 87.9 %.

在最佳反应条件下, 丙酸苄酯的收率可达87·9%.

Synthesis of ethyl iso nicotinate using BTEAC ( benzyl triethyl chloride ) as phase transfer catalyst was studied.

以BTEAC ( 苄基三乙基氯化铵 ) 为相转移催化剂合成了异烟酸乙酯.

METHODS: The target compound was synthesized from N-benzyl protected aminoacetophenone through hydrogenation, benzoylation and reduction.

方法: 以氮 - 苄基保护胺基酮为原料,经氢化, 苯甲酰化,还原三步合成双苯甲酰沙丁胺醇酯.

Under optimum condition the yield of benzyl acetate for 3 hours at boiling is over 96 %.

在最佳反应条件下乙酸苄酯的产率可达96%以上.

Tetrabromobisphenol A-di ( o-chloro benzyl ) ether is a novel efficient flame retardant.

四溴双酚A - 双 ( 邻氯苄基 ) 醚是一种新型高效阻燃剂.

The coker gas oil was refined by benzyl alcohol extraction.

以苄醇为溶剂,用萃取方法提高了焦化柴油的质量.

Synthesized of benzyl oxide was using iodine catalyst dehydration for benzyl alcohol.

以单质碘为催化剂直接由苄醇催化脱水生产苄醚.

DNA filamentous fungi could be provided by the modified with benzyl chloride.

本文采用改进的氯化苄法,得到的DNA质量好、产量高,可以直接用于后续的基因操作.

This is a generally known method for obtaining phenylnitromethane from benzyl cyanide.

从苯乙腈制取苯基硝基甲烷就用这个方法.

A scholar of Old English, Tolkien argued that Beowulf should be read for its literary merits.

身为古英语的学者, 托尔金主张[贝奥武夫]有其文学价值,因此值得一读.

Beowulf slays the monster Grendel and its mother and dies fighting a dragon.

中心故事是关于英雄贝奥武甫怎样打败湖怪格伦德尔及其母亲,后来自己又在杀一条龙时受伤而死.

Grendel was a male monster, slain by Beowulf in the Old English epic Beowulf.

在古英国史诗《贝奥武夫》中,格伦德尔是一只雄性怪兽, 最终被贝奥武夫杀死.

Results show that this Beowulf system could run with high speedup ratio and parallel efficiency.

结果表明:该系统能够达到非常高的并行加速比和并行效率.

Beowulf: That odor I know it!

贝尔渥夫: 那种味道为我所熟知!

The most important is Beowulf, a long epic of 3,182 lines.

最重要的长篇是史诗性质的《贝奥武甫》,它现存3,182行.

Beowulf: The odious one whose heart pumps the blood of Sparda!

贝尔渥夫: 流着斯巴达之血令人憎恶的家伙!

We render the opening lines of Beowulf in literal modern English below.

我们在下面把此诗开头部分用汉语直译出来.

Beowulf is the story of a great king who fought against monsters.

《比奥武夫》讲述的是一位伟大的国王与妖怪斗争的故事.