醚

Three kinds of characterizations confirmed the existence of lyso-PAF in the exudate.

这些研究第一次将具有醚脂结构的物质与生物学活性联系了起来。

It showed that main constituents are linalool, geraniol, farnesol , safrole, citral, t-anethole , decanal and lauric aldehyde respectively and with high cont.

从它们的利用部位花、果、叶和根中，可提取芳香油，主要成分分别为芳樟醇、香叶醇、金合欢醇、黄樟素、柠檬醛、茴香醚及癸醛、十二碳醛等，含量相当高，为重要调香原料，有的作药用，颇具发展种植和开发利用价值。

Background: We have previously proposed an equation derived from Fick's law and Lin's concept of effective blood concentration to calculate the mixed venous blood concentration of isoflurane.

背景：我们以前推荐一个由Fick 理论和 Lin的关于有效血浓度的理论计算出的混合静脉血异氟醚的浓度。

PartⅢthe middle phase behavior of AEO/ n-butanol/ alkane/ watermicroemulsion system was studied byδ-γfishlike phase diagram.

第三部分本文用δ-γ"鱼状"相图研究了脂肪醇聚氧乙烯(9)醚AEO-9中相微乳液相行为。

In this thesis we carried on the preliminary study to the extraction process of plant essential oil, and measured the biological activity of plant essential oil on red flour beetle, Tribolium castaneum and the housefly, Musca domestica vicina.

采用三因素四水平正交试验设计对植物精油进行提取工艺研究，最佳提取工艺条件是A_2B_3C_3，即50g供试植物加入1000ml水，水蒸气蒸馏120min后，用石油醚萃取，萃取液浓缩以后得到的精油可获最大收益。

It was found when ionic liquid BF_4 was chosen for the solvent and CsF for the fluorination reagent, the overall yield 96.6% could be gotten after 3 hours.

通过研究我们发现在离子液体BF_4中，采用CsF做氟化剂反应3小时七氟醚的产率可以达到96.6％。

The chemical compositions, properties and reaction principles of polyurethane applied in coal mine were introduced and the effect of catalyzer, foamer,fire retardant and storage stabilizer on the properties of polyurethane as seal material were discussed.

介绍了煤矿井下用聚氨酯泡沫密闭材料的化学组成、性能和反应原理，探讨了催化剂、发泡剂、阻燃剂和贮存稳定剂等因素对组合聚醚及其聚氨酯密闭材料的性能影响，并在煤矿井下进行了封闭应用试验。

The carbohydrate,fats,protein and amino acid content before and after leather corrosion was analyzed with the following methods:the anthrone color method and the potassium ferricyanide law,the benzine,the Kjeldahl nitrogen determination and the salicylic acid color method,the sole indicator formol titration method.

为了弄清楚霉菌对皮革侵蚀前后，皮革成分变化及其霉菌产生危害的机理，利用蒽酮比色法、石油醚萃取法、凯氏定氮法与水杨酸比色法、甲醛滴定法，分别对侵蚀前后的皮革样品中糖、脂肪、蛋白质和游离氨基酸含量进行了分析。

Proceeding from the considerations of environmental protection,we choose petroleum ether other than Freon.

从保护环境的角度出发，应放弃氟利昂，选择石油醚。

Polyphenylene Sulfide as a heat-resistant, corrosion resistance, high rigidity material, and instrumentation can be the production of gears, axle sleeve; in the electrical industry, for the skeleton, bearing, terminal, etc.; in the chemical equipment, shell can be made pump, impeller, valves, etc.; in the automotive industry, for axial transverse rod bushing, fuel system components.

聚苯硫醚作为耐热、耐蚀、高刚性材料，在仪器仪表中，可制作齿轮、轴套；在电器工业中，作骨架、支座、接线柱等；在化工设备方面，可制作泵壳、叶轮、阀门等；在汽车工业，作轴向横拉杆衬套、燃料油系统部件等。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。