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It supplies chemicals and additives to the lubricants and other industries with a variety of halogenated additives including chlorinated and brominated compounds, metallic stearates and alkylphenols.

多佛化学品公司是 ICC 工业公司的附属公司,基地在俄亥俄州的多佛,为润滑油和其它工业提供化学品和添加剂,以及各种化添加剂,包括氯化蜡及溴化混合物、金属硬脂酸盐及烷基酚。

The oil-saving agent has simple ingredients, does not contain any metal salt as well as halogen, nitrogen, sulfur, phosphor and the like, and does not cause damage to equipment and environment.

这种节油剂成分简单、不含任何金属盐、不含素及氮、硫、磷等元素,不会对设备和环境造成危害。

Preparation of unsymmetrical selenides via the reaction of arylselenol with alkyl halides needs at least equal molar cesium hydroxide as the base.

通过代烃与硒酚反应合成了不对称硒醚,至少要使用等摩尔的氢氧化铯作碱,与氢氧化钾相比,氯化铯价格昂贵。

Alkyl balides react with sodium borohydride and selenium in the presence of solid sodium hydroxide to give dialkyl selenides in excellent yields.

在固体氢氧化钠存在下,代烃及用氢化钠与硒粉作用,在乙醇溶液中制得二烃基硒醚。

Firstly, Vinyl ethers were prepared in a one-pot, two-step transformation by O-alkylation reaction of 2-hydroxyalkyl phenyl selenides with primary or secondary organic halides followed by oxidation-elimination with 30 % hydrogen peroxide.

1.2-羟基烷基苯基硒醚和伯、仲代烃通过O-烷基化反应,然后用30%的双氧水进行氧化消除反应,提供了&两步、一锅法&合成烯基醚的新方法,该方法反应条件温和,操作简便,产物收率中等到良好(70-85%)。

It lives in the high-salt salt lakes and salterns which exist in Shanxi, Tibet, Xinjiang, Qinghai and Inner Mongolia.

主要分布于山西、西藏、新疆、青海、内蒙等内陆盐湖、盐井等高盐水体中,虫卵是水产育苗的优质活诱饵。

Keywords Anemia;Salt lake in Xinking;Precipulation of Salines;Anemia Cysts

虫; 粪粒;成矿作用;新疆盐湖

The present thesis was aimed on the development of halogen-free flame retardants used in epoxy systems.

本论文的主题立足于环氧体系应用之无阻燃剂的研发。

For instance, those in the water quality of the influent are as below: excessive surface active matters, lipid compounds, shock of extreme pH values, very high alkalinity and temperature;inflow of phenol & its derivatives, alcohol, organic acids, and heavy metals etc.

在进水水质方面有:过量表面活性物质和类脂化合物,过低或过高的pH值冲击,碱度过高,水温过热,酚及其衍生物、醇、醛、某些有机酸、硫化物、重金属及化物等致毒性底物的流入等等。

In search of novel pesticide leading compound with high bioactivity,thirty-five 4-chloro- phenyl methyl ketone oxime ether derivatives were designed and synthesized by the reaction of 2-substituted amino 4-chloro phenyl methyl ketone oxime with halohydrocarbon.

为寻找高活性的新农药化合物,通过2-取代氨基-1-对氯苯乙酮-1-肟与代烃反应,设计并合成了35个对氯苯乙酮肟醚衍生物,其结构均经核磁共振氢谱和元素分析确证。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。