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Utilizing 6 and several kinds of diazides prepared in our lab, polys containing 1,2,3-triazolyl and perfluorocyclobutane units were synthesized by "Click chemistry". Utilizing the polycondensation reaction between 6 and several commercially available aromatic diphenol or copolymerization reaction after adding another active aromatic dichloride, fluorinated polys containing phenylphosphine oxide units were synthesized. Utilizing the polycondensation reaction between 6 and several commercially available aromatic dianhydride, fluorinated polys containing PPO units were synthesized.Secondly, structure characterization of fluorinated polys.

利用化合物6同各种自制的二叠氮化合物,通过&Click chemistry&,合成了具有1,2,3-三唑环结构单元的全氟环丁基聚芳醚;利用化合物22同各种商业化的芳香二元酚化合物进行缩聚反应或者再加入另外一种活性芳香二氯代物进行三元共聚反应,制备了具有苯基氧膦结构单元的含氟聚芳醚;通过化合物25同各种商业化的芳香二元酸酐化合物进行缩聚反应,得到了具有PPO结构单元的含氟聚醚酰亚胺。

Chapter 1: The reactions of methylenecyclopropanes with phenylsulfenyl chloride or phenylselenyl chloride give cyclobutene derivatives along with ring-opened products in good total yields at 0 °C in various solvents. The reactions of methylenecyclopropanes with diphenyl diselenide give the di-phenylselenyl substituted ring-opening products which can be transformed to 2,5-dihydrofuran derivatives under the oxidation with hydrogen peroxide at room temperature.

在第一章中,我们发现亚甲基环丙烷化合物在0℃时即可很快与苯硫氯或苯硒氯发生反应生成取代环丁烯化合物和正常的开环产物;而与二苯基二硒的反应则需加热到150℃以上才能进行反应,生成的二苯硒基开环产物在双氧水氧化下可以转化为取代二氢呋喃化合物。

This product is the main ingredient of the drug salvia for the fat-soluble quinone-type diterpene of phenolic acids and water-soluble components, have cardiovascular aspects of the pharmacological effects, in recent years, studies show that water-yong Danshensu components of the lunwen114expansion of the heart Cerebro-vascular, anti-platelet aggregation, the removal of oxygen free radicals, such as the role of a quinone-type diterpene of tanshinone stronger, and water-soluble components of anti-myocardial ischemia is the main ingredient.

本品的主药丹参的有效成分为脂溶性的二萜醌和水溶性的酚酸成分,均具有心血管方面的药理作用,近年来研究表明水镕性成分丹参素的扩张心脑血管,抗血小板聚集,清除氧自由基等作用较二萜醌的丹参酮更强,且水溶性成分是抗心肌缺血的主要成分。

Employed by the famous snake expert and professor Lauber hoon "National Long÷new pacesetters" of the famous female snake-basedby medical consultants, and have a group of dedicated snakes breeding, research, product development and Snakebite Technology prevention team, the first to successfully mastered acutus, Elaphe carinata snake species, such as artificial incubation techniques, the success rate of over 90%, snakes in the country's leading reproductive technology.

本所聘请全国著名蛇专家劳伯勋教授和&全国新长征突击手标兵&著名女蛇医温美玉为本所顾问,并具备了一批专门从事蛇养殖、研究、产品开发及蛇伤防治的科技队伍,率先成功掌握了五步蛇、王锦蛇等蛇种的人工孵化技术,成功率达90%以上,蛇繁殖技术在全国领先。

As I see things, the best options for a non-reductionist are type-D dualism, type-E dualism, or type-F monism: that is, interactionism, epiphenomenalism, or panprotopsychism.

如我看到,最好的观点,非还原的,是D,E和F:即,相互作用论、副现象论或泛主心理论。

Besides ethylic acid, bamboo liquid also contains alcohol, ester and aldehyde. When bamboo liquid is added to cosmetics and skin care, it causes no harm to the users.

竹酢液中除醋酸外,还含有醇、酯、醛等多种纯天然成分,添加到美容护肤品中,对人体无副作用。

While there are a range of videogames, including some that are educational, fun, and academic, there are also many videogames that are extremely violent, aggressive, and sexually exploitive, much to the surprise of many parents.

视频游戏分很多种,包括一些教育、娱乐和学习的游戏,但也有非常多极度暴力、血腥以及色情的游戏,这些都大大出乎家长的意料。

We can produce 3500 tor forgeable iron, 2800 ton forged,product,1200 ton aluminum bronze aluminum and 1000 ton cast iron one year.

可锻铸铁年产量3500吨,锻压年产量2800吨,铝铜铝年产量1200吨,铸铁年产量1000吨。

Shell products are subjected to by the technical specifications of 1.0 ~ 1.6MPa water pressure test and the 0.5 ~ 0.82MPa gastightness test, the majority of those casting shell-type is an A-type products, technical difficulty, high-tech .

壳体产品按技术规范需承受1.0~1.6MPa的水压试验及0.5~0.82MPa的气密性试验,这些壳体铸件大多数属A产品,技术难度大,科技含量高。

The characteristics of non-azide compositions including high nitrogen compounds such as tetrazoles,guanidine,improved thermites,oxidants,binders and process assistants are discussed.Because of their advantages such as adjustable burning rate,nontoxicity and high gas yield,non-azide gas generant to replace azide gas generant will put into use widely.

对出现的四唑、胍、铝热剂等非叠氮配方的高氮化合物燃料、氧化剂、黏合剂、工艺助剂等特点和发展做了总结和讨论,指出非叠氮高氮化合物有无毒、燃速范围宽、产气量大、燃温低等优点,正在取代叠氮配方燃气发生剂,得到广泛应用。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力