查询词典 carbureted hydrogen

Based on the analysis to production data, it is pointed out that coking crude benzol should be further pre-distilled to effectively remove the high-boiling-point composition before entering the hydrogen-adding refining device.

通过对生产数据的分析，阐述了焦化粗笨进入加氢精制装置前，需进一步预蒸馏，有效去除高沸点组分的必要性。

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用"一勺烩"方法，以4-羟基苯甲腈为起始原料，首先与硫氢化钠和无水氯化镁在N，N-二甲基甲酰胺中反应，所得中间体不经分离，直接加入2-氯乙酰乙酸乙酯进行环合反应，得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（2）；然后通过六亚甲基四胺/三氟乙酸进行Duff反应，得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（3）；再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

Three ways leads to the synthesis of fenclorin, one way discussed here has 3 steps. Stepl :benzonitrile using as raw material goes though dry hydrogen chloride and becomes a-imino phenylmethyl ether after meet carbinol.

解草啶的合成主要有三条路线，本文选取合成路线是以苯甲腈为原料，经三步反应而成：1、苯甲腈在干燥的氯化氢通入，与甲醇形成亚氨基苯甲醚，通入氨气后置换甲氧基得到苯基脒盐酸盐(收率76.18%)。2、苯基脒盐酸盐在碱性条件下与丙二酸二乙酯环合而得嘧啶醇(收率84.39%)。3、嘧啶醇在三氯氧磷中羟基被氯化得到产品解草啶(收率87.29%)。

The reaction of benzophenone's excitation and active hydrogen-abstraction is a typical photo-reduction reaction; it has been widely applied to surface photo-grafting and photo-polymerization.

二苯甲酮在紫外光照下激发并夺取活泼氢的反应是一个典型的光还原反应，被广泛应用于表面光接枝及光聚合领域。

The effects of hydrogen on the resistivity and the electron binding energy were studied.

研究了氢对块体非晶合金电子结合能和电阻率的影响。

Power for the Volkswagen Nanospyder concept would come from electricity, provided by a bio-engineered protein on the skin of the vehicle using photosynthesis, and a hydrogen-fueled power source.

功率为福士nanospyder概念来自电力、由生物工程蛋白对皮肤的汽车使用光合作用、氢燃料电源。

A hydrogen peroxide biosensor is prepared by using potato tissue as the biocatalyst and combining with a oxygen electrode.

以马铃薯组织作为生物催化材料与氧电极结合研制成过氧化氢传感器，具有灵敏度高、选择性好和寿命长等特点。

Biogenetic gas;origin of hydrogen;biochemical action;hydrogenase;isotopic composition

生物气；氢的来源；生物化学作用；氢化酶；同位素组成

The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements.

近20年由於「气相同位素比值质谱仪」的改良和氢、氧、碳、氮和硫等稳定同位素的广泛研究，稳定同位素的研究技术已实质增加我们对於这些元素在自然生態系中生地化循环的瞭解。

True, they had done whatever they could to minimize risk, chiefly by cutting the amount of hydrogen they could use and blanketing the gas canister in insulation and another canister.

真实的，他们已经做无论什麼他们可以将风险减到最少，藉由减低他们可以使用的氢数量和毛毯底子绝缘和另一个罐的瓦斯罐主要地。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。