缩并

Firstly, the reactivity of benzaldehyde is studied utilizing the autoclave designed by us in near-critical water.

通过对苯甲醛在近临界水中反应后产物的分析检测认为，苯甲醛在有限的温度范围内微量的发生了Cannizzaro反应，并同时伴随有苯甲醛自身的羟醛缩合反应等其他副反应的发生。

In the precence of the base catalyst KF/Al2O3, the one - pot reaction of 2 -hydroxybenzaldehyde or 2 - hydroxynaphthaldehyde with ethyl α- bromoacetate,α-bromoacetophenone , 1,4 - dichloromethylbenzene , 4,4'- dichloromethylbiphenyl and 1,5 -dichloromethylnaphthalene gave the benzofuran compounds in 38-89% yield.

本文报道用 KF/Al_2O_3作为碱催化剂，由水杨醛或2-羟基-1-萘醛分别和α-溴代乙酸酯、α-溴代苯乙酮、苄基氯、4，4'-二氯甲基联苯和1，5-二氯甲基萘等进行一锅化缩合反应，以38～89％的产率合成了14种芳并呋喃化合物。

It was found out that the evaporator shutter and the blocking of top separator by the biuret were the direct reasons for standard exceeding.

分析尿素装置水解解吸工艺冷凝液超标的原因，确认蒸发器百叶窗及顶部分离器缩二脲堵塞是造成此次工艺冷凝液超标的直接原因，并据此提出防范措施，减少同类事故的发生。

The characters and applications of vacuum film evaporation and molecular evaporation are outlined, and an XZN inner-cooling vacuum agitated film evaporator was used to reduce free monomer from HDI biuret , which is for improving the quality of polyurethane paints and coatings, decreasing pollution and danger to worker.

本文介绍了真空薄膜蒸发和分子蒸发的原理、特点和应用，并介绍了真空薄膜蒸发-冷凝工艺在分离HDI 缩二脲中游离单体中的应用。

A model of blank cartridge ejection device was established and the ejection and restoration processes described.

本文建立了采用气体驱动弹射—回收的抛放弹弹射机构的数值计算模型，用经典内弹道和气体动力学理论分析了火药弹燃烧、弹射活塞完全推离悬挂物并回缩到初始状态的整个过程。

Well here it is first u have to roll at a moderate speed than you take the back foot off your board and just like the boneless u have to start lifting your board up and when you reach about your knee level u have to put your left or right hand you start power lifting your body up to the air and before u do that u have to lift up your needs to your chest and then from there you have to push your legs out and stay there as much and you can and try to put as much pressure on your arms as you can and extend your body before you come down and if u have to bail then this is the right time and make sure when you bail that you roll.

以适速前进然后后脚下来像boneless一样，用前手把板抬起到膝盖高度时用你惯用的那只手撑地有力地把你的身体撑起到空中，在这之前你已经把膝盖靠到胸部了，然后伸膝保持时间尽可能长，并把主要的压力放到手上，在下来前伸展身体，如果要摔时，在这个时候最好，身体缩成团滚开。

There was the guy with red hair and big steaklike hands that walked with me arm in arm through Washington Square Park, kissed me on the stoop of my mother's brownstone and said he wanted to be my boyfriend. Until our next walk, when he kept his hands to himself and said he meant boyfriend "in the theoretical sense of the word."

有一位曾同我手挽手走过华盛顿广场公园的红头发、手指如牛排那么粗的男子在我母亲的赤褐色砂石房子门口楼台阶上吻了我并说他希望成为我的男朋友，可还没等到下一次同他散步他就把手缩了起说他说"男-"朋友是指"纯理论上"的。

Wouldn't it then be awesome if you could hover your cursor over a thumbnail while still in full list / browse mode and see a larger image?

不会它，然后可怕，如果你可以悬停您的光标移动超过缩图的同时，仍然在完整清单/浏览模式，并看到一个较大的形象？

Ethyl 4-[(1-hydroxy-1-methyl)ethyl]-2-propyl-1H-imidazole-5-carboxylate,the key intermediate of Olmesartan ,was synthesized from butanoic acid and o-phenylenediamine via condensation under microwave-irradiation,oxidation,esterification and the Gringard reaction.

用正丁酸与邻苯二胺为原料，在微波照射下缩合成2-丙基苯并咪唑，再氧化开环制得2-丙基咪唑二羧酸，再经酯化、Gringard反应制得抗高血压药物奥美沙坦的关键中间体2-丙基-4-[(1-羟基-1-甲基)乙基]-1H-咪唑-5-羧酸乙酯，总收率32.2%。

A polyvinyl butyral which is utterly powder state without any emulsification was obtained by improving synthesis technology for PVB.

通过对聚乙烯醇缩丁醛的合成工艺进行改进，并在不加任何乳化剂的条件下，制得了完全粉末状的PVB产品；将其用于夹层安全玻璃的制备，则雾度值为0。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。