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Furfuryl propionate was synthesized from furfuryl alcohol and propionyl chloride using hexahydropyridine as catalyst and anhydrous sodium bicarbonate as acid-caputor.

以α呋喃甲醇和丙酰氯为原料,以六氢吡啶为催化剂,无水碳酸氢钠为酸剂合成了α呋喃甲醇丙酸酯。

A new aroma compound,furfuryl thiopropionate was synthesized using furfuryl thioalcohol and propionyl chloride as raw materials,with calcium oxide and sodium carbonate as acid-capturer.

以糠硫醇和丙酰氯为原料,用氧化钙和碳酸钠为复合酸剂,合成了香料硫代丙酸糠酯,并用IR、元素分析等进行了表征。

They hamshackle a horse.

他们把马的头兴前足起。

The Effect of different reaction conditions (solvent, reaction temperature, molar ratio of iodobenzene and acrylic acid, kind and amount of base, amount of catalyst, reaction time) on the yield was investigated. The suitable condition of the reaction was obtained.

考察了不同反应因素(溶剂、温度、原料比、酸剂及其用量、催化剂用量、反应时间)对反应的影响,确定了该催化剂对碘代苯与丙烯酸交叉偶联生成反式-肉桂酸的适宜反应条件。

Fourteen new pyrethroids containing isoxazole were designed and synthesized from 4-isopropyl-3-substituted phenyl-5-hydroxyl isoxazoles as major material, whose structures were also characterized by IR, 1H NMR and elemental analysis.

以4-异丙基-3-取代苯基-5-羟基异噁唑和3-苯氧基苄基溴为原料,三乙胺为酸剂,设计并合成了14个未见报道的4-异丙基-3-取代苯基-5-异噁唑基-(3'-苯氧基)苄基醚。通过红外光谱、核磁共振、元素分析等手段,确证了它们的化学结构。

Park House, the Chief TANG Qin sites, like Yang and the emperor built the playground,"Aquilaria Pavilion" calyx, as well as with floor-hui, Changqing Xuan, Long tied together, the Hall of Nanxun, Tsui Chuk booths and attractions such as Mr Abe Maro, and other monuments in various places.

园内有唐勤政务本楼遗址,仿建有唐玄宗与杨贵妃游乐的&沉香亭&以及花萼相辉楼、长庆轩、龙堂、南薰殿、竹翠亭等景点和阿倍仲麻吕纪念碑等多处名胜。

Now that the circular industry development is astricted by overfull designing and programming, so government should change their point of view, steer circular industry development from establishing a in order environment.

既然目前的循环工业发展受于过多的设计规划,那么政府就应该换个角度,从营造适宜环境方面引导循环工业发展。

To improve the yield of an Amide-type Tripodal Ligand and investigate its coordination with rare earth ion under mild condition,a series of Amide-type Tripodal Ligands(L1—L4) have been prepared by the reactions of nitrilotriacetic acid and oxalyl chloride with four kinds of amides,respectively.

为了提高酰胺型三脚架型配体的产率,进一步研究其与稀土离子的配位形式及配合物的荧光性能,以氨三乙酸为母体,草酰氯为氯化试剂,与4种胺在较温和的条件下合成了具有三脚架型结构的配体(L1—L4),并考察了实验条件、反应温度、反应体系溶剂、酸剂、反应时间及催化剂对反应产率的影响。

Kinetic spectrophotometric method for the determinationof trace nitrilotriacetic acid;2. To improve the yield of an Amide-type Tripodal Ligand and investigate its coordination with rare earth ion under mild condition,a series of Amide-type Tripodal Ligands(L1—L4) have been prepared by the reactions of nitrilotriacetic acid and oxalyl chloride with four kinds of amides,respectively.

为了提高酰胺型三脚架型配体的产率,进一步研究其与稀土离子的配位形式及配合物的荧光性能,以氨三乙酸为母体,草酰氯为氯化试剂,与4种胺在较温和的条件下合成了具有三脚架型结构的配体(L1—L4),并考察了实验条件、反应温度、反应体系溶剂、酸剂、反应时间及催化剂对反应产率的影响。

Yet many consider that The Dream of the Red Chamber is the kind of recollective family novel, marriage and desire could be regarded as restrictions to whom had irreversibly tragic destiny to their life and spirit, and thus this resulted in many who refused, resisted, and feared marriage.

然而《红楼梦》本身就如同回忆式家庭小说,所撰写女性各自有自己的命运不可逆转的悲剧性,也无法逃离自身的命运,几乎都可以归结於婚姻、情欲对她们生命及性灵所带来的捆,因此有许多非婚者:不婚、抗婚、难婚、惧婚皆有之。

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推荐网络例句

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了

The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.

世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。