醚的

The improved preparation method for carboxy methylation of konjac glucomannan was proposed in this paper according to molecular structural characteristics of KGM.

针对魔芋葡甘聚糖分子结构特性进行羧甲基化方法的改进，在乙醇介质中先混合醚化试剂，再进行碱化催化反应制备羧甲基魔芋葡甘聚糖。

Objective: To compare the feasibility and effect of intravertebral anesthesia combined with inhaling isoflurane by veil in anesthesia of celioscope operation.

目的：比较椎管内麻醉联用面罩吸入异氟醚在腹腔镜手术麻醉的可行性及效果。

Wax ester was synthesized from soybean oil and cetyl alcohol in a packed-bed reactor with petroleum ether as solvent and immobilized lipase Candida sp.99-125 as catalyst.

以大豆油、十六醇为原料，在石油醚体系中，使用实验室自制的固定化Candida sp.99-125为催化剂。

In this paper We mainly studied the catalytic effect of crown ether for Darzens Glycidic Ester Condensation of aromatic aldehydes with ethyl chloroacetate in mixed solvent system .

本文着重研究了在混合溶剂中用冠醚作催化剂所进行的Darzens反应，并合成了四个芳族缩水甘油酸酯类化合物。

A fast colorimetric method of determining fatty alcohol polyoxyethylene ether in compact laundry powder with cobaltic thiocyanate was discussed.

介绍了用硫氰酸钴盐比色法对浓缩粉中脂肪醇聚氧乙烯醚(AEO9)含量进行快速测定的方法，该法准确、方便，相对标准偏差小于 1%，浓缩粉中其他组分对测定结果无干

The linear relationship between creaturely activity for alcohol, aether, ketone and ester and the molecular topological index is obtained.

研究了醇、醚、酮和酯对水生生物毒性、蝌蚪麻醉活性、沙镯幼虫麻醉活性、番茄植物毒性、红蜘蛛毒性、藤壶幼虫麻醉活性、局部麻醉剂活性和小鼠毒性等八种生物活性分别同其分子连接性指数的相关性。

The cytoderm of the thalli contained glycerol diether derivatives with halophilous archaea characters. The shape of the thalli was spherical and the colony was orange red, which was identified as halophilous archaea, Halorubrum genus based on the physiological and biochemical identification and l6S rDNA gene sequence homologous analysis.

结果］SYM菌株能在饱和NaCl浓度下生长，菌体细胞壁含有嗜盐古细菌特征性的甘油二醚衍生物，菌体形态为球状，菌落显橙红，经生理生化和16 SrD-NA基因序列同源性分析鉴定为嗜盐古细菌嗜盐深红菌属。

The KR 12 oil demulsifying agent,which is a kind of modified polyether type high molecular polymer,with good oil-solubility,can improve the demulsibility of industrial lubricating oil remarkably and reduce the air release value of oil as well as has good oxidation and storage stabilities.

KR 1 2油品破乳剂是一种改性聚醚类高分子聚合物，油溶性能好，能显著改善工业润滑油的抗乳化性能，降低油品空放值，其氧化、储存稳定性好。

Namely, only for biobriquette low presence of dialkyl sulphides and aliphatic thiols was registered.

对于生物型煤来说，仅检测到少量二烷基硫醚和脂肪硫醇的存在。

In this study,diallyl sulfides in garlic powder were identified via the introduction of Ag induced-ionization.

烯丙基硫化物由于弱极性不电离，本实验利用Ag+柱后诱导电离对大蒜粉剂中的含硫化合物进行质谱定性，并以二烯丙基三硫醚为参比，对各种二烯丙基含硫化合物进行定量测定。

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。