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Polybutylene terephthalate (PBT) is a semicrystalline thermoplastic polymer formed by a condensation process.

PBT是一种通过浓缩成型而制备的,一种半结晶热塑性塑料。

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Five Schiff bases were prepared from piperonal and diamines by condensation reaction.

合成新的双-胡椒醛缩二胺类席夫碱化合物。

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A reduction in condensation is accomplished by the use of steam-jackets.

使用汽套就能达到

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The absorption spectroscopic determination of aucubin by condensation with p-dimethylaminobenzaldehyde was optimized in this paper.

采用均匀设计法对对二甲氨基苯甲醛显色法测定桃叶珊瑚甙的显色条件进行了优化。

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It Is necessary to include as a heat source In the thermodynamic energy equation at erm which represems the timerate of release of the latent heat of condensation of water vapor.

有必要把代表水汽凝结潜热释放的随时间变化率的一项作为热源项包括在热力学能量方程中。

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This paper researches into enhanced heat transfer of condensation of splitting gas of waste plastics and R113 on the general smooth tubes,the screw tubes and the aculei finned tubes.

本文研究制剂R113和废塑料制汽油过程中产生的裂解气在水平光滑、螺纹与“犁刺”上的凝强化传热。

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A kind of monosubstituted squaric amide ——mono carbamoyl amide of squaric acid 3(MCASAQ) was prepared by the condensation of squaric acid (SQ) with urea or its derivatives in water.

以水为介质,方酸与脲及其衍生物顺利发生脱水缩合,合成了一类方酸单酰胺化合物——氨甲酰类氮氧方酸3。

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It was shown that the curing process of resoles, at first, proceeded by condensation reaction of methylol groups, and the formation of dimethylene ether linkage was predominant.

结果表明热固性酚醛树脂的固化过程,首先是羟甲基发生缩合反应,缩合反应形成醚键是主要的。

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Adsorbable gases can be separated by porous ceramic membranes under the capillary condensation mechanism of membrane separation, on which prior study was only limited to pure components.

多孔陶瓷膜在毛传质机理的作用下能够有效地分离吸附性气体。而毛凝膜分离传质机理的研究还很不充分,目前,文献报道仅局限于纯组分气体的传质模型研究。

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Conclusion: Condensation to partial ciliary body and the whole retina plus second-stage trabeculectomy is one of so effective methods in the treatment of neoformative vascular glaucoma.

部分睫状体和全视网膜凝加二期小梁切除术是治疗新生血性青光眼的有效方法。

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A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲醛在碱性条件下经加成、缩合制得可发性酚醛树脂,该树脂和表面活性剂、发泡剂、固化剂一起发泡即得酚醛泡沫塑料。

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The two now isonicotnic acid hydrazone and N-oxide isonicotinic acid hydrazone of ethyl furoyl acetates were synthesised. The condensations were carried out in ethyl alochol medium.

合成了呋喃甲酰乙酸乙酯异烟酰腙和呋喃甲酰乙酸乙酯N-氧化异烟酰腙。缩合反应在乙醇中进行。

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Vitreous changes were cardinal findings.Vitreous cells were noted in 27(77%) eyes, snowball in 15(43%) and retrolental condensation in 7(20%).Snowbank was found in only 1(3%) eye.

玻璃体为主要发炎部位,其中玻璃体胞出现于77%的患眼,雪球状混浊者43%,晶体后凝结者20%,而雪堤者仅1眼(3%)。

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This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation of diethyl oxalacetate followed by cyclization and ammonolysis.

讨论了以草酸二乙酯为原料,经过克莱森缩合、环合、氨解反应合成5甲基异唑3甲酰胺工艺的改进。

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High-grade filling and retanning agent CDF was prepared by condensation polymerization reaction of urea,cyanuramide and dicyandimide.The property and application of the product were discussed.

本文主要论述了用脲、双氰胺、三聚氰胺等原料经缩聚反应制备填充复鞣剂CDF的方法及其性能与应用。

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The main synthetic methods of o-phenylphenol were reviewed.The method and research status of dehydrogenation to o-phenylphenol after cyclohexane condensation reaction were discussed detailedly.

摘要介绍合成邻苯基苯酚的几种主要工艺方法,对环己酮缩合脱氢法制邻苯基苯酚的合成方法及研究状况进行详阐述。

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Based on the theoretical analysis, the electrohydrodynamics (EHD) enhancement of condensation heat transfer inside vertical tube for five representative electrodes were investigated.

基于EHD强化凝结换热的理论分析,对5根直径不同的电极进行了垂直内EHD强化凝结换热实验研究。

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Alizarin complexone is obtained by the condensation of alizarin with formaldehyde solution and iminodiacetic acid in the presence of alkaline conditions.

茜素络合指示剂是在碱性条件下由茜素、甲醛和亚氨基二乙酸缩合而成。

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Thirteen new compounds of the alkyl styryl indoline spirobenzopyrans were synthesized from the condensation of 2-methylene indoline with the designed salicylaldehyde.

利用2-亚甲基吲哚啉和取代水杨醛缩合得到十三种新的烷基苯乙烯基吲哚啉螺苯并吡喃。

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Nowadays precision dew point hygrometers are mostly the type of light-electricity detection,thermoelectric refrigeration and specula-surface condensation dew point instrument internationally.

目前国际上的精密露点仪大多为光电检测且热电制的镜面式露点仪。

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科普小杂文

As the warmer air rises over the cold air it also starts to cool, condensation occurs, and the cloud forming process begins, leading to rain.

随着暖空气上升到冷空气上方,它也开始冷却,出现凝结现象,云开始形成,雨。

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CNN 10 学生英语 2018年2月合集

Humidity causes condensation and a veil of salt forms on the famous frescoes painted in the 1400 and 1500s, which damages the color and the plaster it's painted on.

在1400和16世纪著名壁画上,湿度引起了凝结和一层盐雾,破坏了颜色和涂上石膏。

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双语版 TED-Ed 演讲精选

Condensation releases heat, and heat becomes the energy that drives huge upward drafts of air.

凝结释放热量,热量成为驱动大量气流上升能量。

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科学大揭秘

In 2001, these physicists won the Nobel Prize in physics for achieving Bose-Einstein condensation.

2001 年,这些物理学家因实现玻色-爱因斯坦凝聚而获得诺贝尔物理学奖。

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英国学生科学读本

So when we cool the steam, and bring its particles close together in the form of water, we are said to condense it, or make it dense; and the process of doing this we call condensation.

因此, 当我们冷却水蒸气, 将水蒸气分子紧压到一起, 转为液态水时, 我们就是对它进行凝结, 或者说增加它密度。这个过程就被称作冷凝

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经济学人-科技

Iwan Hachler and Dimos Poulikakos of the Swiss Federal Institute of Technology in Zurich have, however, come up with another way of warming something up to stop condensation forming.

然而,苏黎世联邦理工学院伊万·哈克勒和迪莫斯·普利卡科斯想出了一种新方法,加热某样东西,防止水蒸气凝结

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哈利波特与火焰杯

Snow was still thick upon the grounds, and the greenhouse windows were covered in condensation so thick that they couldn't see out of them in Herbology.

场地上仍然覆盖着厚厚积雪,暖房窗户上凝结着细密水珠,他们上草药课时看不见窗景。

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美国历史频道纪录片《宇宙》

So we can only model an imagine of what kind of precipitation but condensation in the form of condensed vapor of various gasses.

。因此我们只能模拟它景,各种气体凝结成蒸汽存在。

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日常生活医学科普

Leptotene is of very short duration and it's when their progressive condensation and coiling of chromosome fibers takes place.

细线期持续时间很短,这是染色体纤维逐渐凝结和卷曲过程。

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中高级英语短文

The tiny hairs on peaches delay this by collecting condensation droplets and holding them away from the fruit's skin.

桃子上绒毛通过收集凝结液滴并将它们远离果皮来延缓这种况。

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老友记 听力

Little beads of condensation are inching their way closer and closer to the surface of the wood...

凝结小水珠一点一点地向下接近木头桌子表面。

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双语版 TED-Ed 演讲精选

The more condensation and the bigger the storm clouds grow, the more powerful those updrafts become.

凝结程度越大,并且形成风暴云团越大时,那些上升气流也就越强。

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双语版 TED-Ed 演讲精选

Any storm is formed when condensation occurs, the byproducts of the clouds.

凝结发生时候,风暴就形成了,风暴是云副产品。

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博兹曼科学——

Remember as a gas gets closer to condensation we're going to have more of these attractive intermolecular forces.

请记住, 当气体接近凝结时, 我们将拥有更多这些吸引性分子间力。

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世界史 Crash Course

In 533 Justinian published the Digest, an 800,000-word condensation of 1,528 Latin law books.

533 年,查士丁尼出版了《文摘》,这是 1,528 部拉丁法律书籍 800,000 字浓缩版。

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PBS太空科学

But tiny grains of dust acted as 'condensation nuclei' to let droplets form.

但微小尘埃颗粒充当了“凝结核”,让水滴形成。

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Crash Course 综合篇

And, that other polymers are formed by condensation reactions.

并且, 其他聚合物是通过缩合反应形成

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圣诞吃什么

That will prevent the pastry cream from getting any condensation or forming a skin.

这将防止糕点奶油凝结或形成皮肤。

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In Our Time: Philosophy

And each issue has a condensation of some book of note.

每期都会简要介绍一本重要书籍精华内容。

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Speak The Truth

But the problem with America, condemnation, that's a word, condensation, that's another word.

但美国问题在于,谴责,这是一个词,冷凝,这是另一个词。

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