二氯化合物

For example, acetylene generated by the carbide process contains arsenical and sulphur compounds, and other impurities, which must be removed by scrubbingwith concentrated sulphuric acid before it is sufficiently pure for reaction with hydrochloric acid (此处有误,应为hydrochloride氯化氢) to produce dichloroethane.

例如，由碳化钙发生的乙炔气含有砷和硫的化合物以及其他的杂质，必须在乙炔有足够的纯度与氯化氢反应制造二氯乙烷之前，用浓硫酸洗去这些杂质。

In some embodiments compounds described by the formula CCl.sub.xH.sub.y comprise carbon tetrachloride, dichloromethane, or combinations thereof.

在某些实施方案中，由化学式CClxHy所表述的化合物包括四氯化碳、二氯甲烷或它们的组合。

The results show that the new β-diketone compound exists in the chloroform in chloroform solvent.

这种β-二酮化合物在氯仿溶液中主要以烯醇形式存在。

Electrokinetic transport process could promote effectively the desorption and migration of phenol and 2,4-dichlorophenol in soil; electromigration and electroosmosis were the main mechanisms; and the .

结果表明，电动力学过程能有效地促进土壤中苯酚及2，4-二氯酚的解吸附和迁移，电渗析和电迁移是其主要的作用机理，其迁移效果与电动力学形式、污染物类型、土壤酸碱性质和电极反应等密切相关，可以采用适当的电动力学工艺修复含酚类化合物的污染土壤。

Then the solution is heated to the temperature at which the caffeine and either methylene chloride or ethyl acetate compounds evaporate.

那么，解决办法是加热温度的咖啡因，或是二氯甲烷或乙酸乙酯化合物蒸发。

Using 2,4,6-〓 as phase-transfer catalyst, ten symmetrical azobenzene were prepared with a saturated solution of potassium ferricyanide in 2N aqueous potassium hydroxide and dichloromethane.

用2，4，6-三叔丁基苯酚为相转移催化剂，芳胺类化合物在饱和铁氰化钾的氢氧化钾溶液和二氯甲烷的两相转移催化下合成了10个对称取代偶氮苯，并对反应机理也做了合理的解释。

Chemical investigation on the leaves of cultivated Calophyllum inophyllum linn led to the isolation of three compounds named Friedelan-3-one(1),1-triacontanol(2) and canophyllol.

从人工栽培红厚壳叶的二氯甲烷提取物中分离得到3个化合物，经理化数据对照和波谱分析，确定它们分别为：木栓酮(1)，三十烷醇(2)和海棠果醇(3)。

When pumped with 800 nm laser irradiation, chromophores BPODPA, BBPOPA, and TBPOA showed strong two-photon excited blue green fluorescence at 502, 515, and 518 nm, respectively. These multibranched chromophores showed large TPA cross-section.

在800nm波长的激光激发下，化合物BPODPA、BBPOPA和TBPOA在二氯甲烷溶液中发出很强的蓝绿色双光子上转换荧光，荧光峰分别位于502、515和518nm。

In order to find highly active lead compounds, a series of new pyridazine derivatives have been synthesized using 3,6-dichloro pyridazine as starting material by a three-step synthetic route.

为了寻找高活性的先导化合物，以3，6-二氯哒嗪为原料，经过三步反应，合成了一系列未经文献报道的3-芳氧基-6-(3，5-二甲基-1H-吡唑-1-基)哒嗪。

Compounds, N - methylene chloride acetyl groups - 2 - methyl - 2,5 - diethyl arene pbo.

化合物Ⅱ：N-二氯乙酰基-2-甲基-2，5-二乙基-1，3-恶唑烷。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。