查询词典 sulfureted hydrogen

The present research and application of oxidants, including chlorine dioxide, hydrogen peroxide, ozone, potassium permanganate, were analyzed and treatment processes such as ozone combining with BAC, ozone cooperating with hydrogen peroxide and ozone with plus radiation oxidation were discussed.

论述了当前饮用水处理过程中去除水中有机污染物的化学氧化技术应用，包括二氧化氯、过氧化氢、臭氧、臭氧-生物活性炭、臭氧-过氧化氢，臭氧-辐射氧化、高锰酸钾氧化法的研究与应用，分析了各种方法的优点与存在的问题，并对其应用于饮用水处理的发展提出了设想。

Papers in the experimental part of our literature considered on the basis of the experimental exploration, and podophyllotoxin intermediates with the structural characteristics of a simple pepper aldehyde as the starting material,α,β-unsaturated carbonyl compounds are selective reduction lithium aluminum hydrogen reduction reaction as the key steps to have the Knoevenagel condensation, peracetic acid epoxy between chlorine and alkaline hydrogen peroxide epoxy, DCC condensation esterification reaction of the three podophyllotoxin intermediates.

论文实验部分我们在综合考虑文献的基础上，经过实验摸索，并结合鬼臼毒素中间体的结构特点以简单的胡椒醛为起始原料，对α，β-不饱和羰基化合物具有选择性还原的锂铝氢还原反应为关键步骤，先后经过Knoevenagel缩合，间氯过氧苯甲酸环氧化，碱性过氧化氢环氧化，DCC缩合酯化等反应合成了3个鬼臼毒素中间体。

The intramolecular hydrogen bonding energies for some special systems were evaluated by means of the substitution method, cis-trans method, and supermolecular approach. The intramolecular hydrogen bonding energies predicted by the substitution method agree well with the values obtained by the cis-trans method and the supermolecular approach.

对一些特殊体系，使用取代法，cis-trans方法和超分子方法计算了氢键键能，取代法计算得到的氢键键能与cis-trans方法、超分子方法的计算结果相符。

When we open and clean the chamber, odor as well as toxic gasese.g., hydrogen chloride, cyanogen chloride, hydrogen cyanide, etc.

在打开密闭反应腔及擦拭腔壁时会产生极刺鼻味道且含有HCl、HCN、CNCl等毒性气体，会逸散至洁净室，所造成劳工健康危害。

When we open and clean the chamber, odor as well as toxic gases(e.g., hydrogen chloride, cyanogen chloride, hydrogen cyanide, etc.) are released.

在打开密闭反应腔及擦拭腔壁时会产生极刺鼻味道且含有HCl、HCN、CNCl等毒性气体，会逸散至洁净室，所造成劳工健康危害。

Wedgeplug O-Seal plug valves with their positive, no-leak features are not only recommended as the best general purpose valves for handling hydrocarbons, vegetable oils, solvents, etc., but are ideal for such tough service as butane, propane, butadiene, acetone, ethyl alcohol, ammonia, anhydrous ammonia, benzene, vinyl chloride, dry chlorine, Dowtherm, ethane, ethylene, hydrogen chloride, napthalene, oxygen, hydrogen, phthalic anhydride, dry phosgene, phosphoric acid, potassium carbonate, styrene, molten sulphur, sulphur dichloride and related services within a temperature range from -300oF to + 450oF within pressure limits of the valves.

楔塞O形密封旋塞阀具有积极的、无泄漏特性，不但是最好的通用的阀门，用于处理碳化氢，植物油，溶剂等，还特别适用于严酷的应用环境，如丁烷，丙烷，丁二烯，丙酮，乙醇，氨，无水氨，苯，氯乙烯，干氯，道氏热载体，乙烷，乙烯，氯化氢，萘，氧，氢，邻苯二甲酸酐，干碳酰氯，磷酸，碳酸钾，苯乙烯，融化硫，二氯化硫，以及温度在-184oC至232oC之间，压力在阀门额定压力等级范围内的有关应用。

Hydrogen peroxide is a high-efficacy oxidation disinfectant, with strong broad-spectrum biocidal efficacy and no decomposed toxicity. Lately, hydrogen peroxide has turned into the main environment-friendship disinfectant material.

过氧化氢是一种氧化型高效消毒剂，杀菌能力强，杀菌谱广，分解后无残留毒性，近年来已经成为开发环保型消毒剂的主要消毒剂。

This thesis put that, although ETF and BATF had the same biogas yield, their hydrogen yields were remarkably different in the same testing condition because the hydrogen content in their produced biogases were different due to the difference of their metabolic pathways.

本研究先后从连续流反应系统的乙醇型发酵阶段和丁酸型发酵阶段分别7次采集分离样品，从中分离到215株产酸发酵细菌，其中有36株具有产氢能力。

Three dimensional hydrogen bonding in hard segment domains can be formed by further bonding of the above planar hydrogen bondings.

认为这些平面氢键可以通过进一步键合来形成硬段微区中的三维氢键。

Consequently we found two principal results in this investigation.(1) The crystal structures of molecular crystals formed from different chlorobenzoic acids and three kinds of organic bases showed that in addition to common hydrogen bondings, the weaker intermolecular interactions such as the C-H…O hydrogen bonding, the π-π stacking and electrostatic interaction play an important role in determining the packing modes of each molecular crystal.

在对双分子晶体结构的研究过程中，我们发现存在以下两条规律：（1）不同的氯苯甲酸与三种有机碱形成的双分子晶体的结构显示，除了常见的氢键作用外，弱的分子间相互作用，例如C-H…O类型的氢键、π—π相互作用、静电相互作用等对于不同分子堆积模式的形成也起到了很重要的作用。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。