醚

DUX M53 had PPS-43 style safety, located in front of the trigger guard, while M59 had a sliding safety switch on the left side of the receiver, above the pistol grip.

的DUX M53了聚苯硫醚- 43式的安全，防范触发位于前面的，而M59手枪握了安全左侧滑动开关就上述的接收器。

Disease characteristics. Homocystinuria caused by cystathionine β-synthase deficiency is characterized by developmental delay/mental retardation, ectopia lentis and/or severe myopia, skeletal abnormalities (excessive height and length of the limbs) and thromboembolism.

疾病特征：由胱硫醚β-合酶缺乏引起的高胱氨酸尿症的病征是发育迟缓／智力障碍、晶状体异位和／或严重的近视骨骼异常和血栓栓塞。

Polyether is an effective wetting agent, and it can be used in textile dyeing, photographic developing and electrobath.

聚醚是有效的润湿剂，可用于织物的染色、照相显影和电镀的酸性浴中。

We investigated the effects of sevoflurane and hyperventilationon intraoperative electrocorticogram spike activity in13 patients with intractable epilepsy.

本文研究了术中七氟醚和过度通气对13名顽固性癫痫患者脑电图棘波活动的影响。

Electropolar solvent such as THF may destroy the polyetherimide layer,while non-electropolar solvent such as petroleum ether cannot solve vinyl acetic acid cobalt.

极性溶剂如四氢呋喃会溶解PEI层，而非极性溶剂如石油醚又不能溶解丁烯酸钴。

IMPLICATIONS: A rapid increase in the concentration of sevoflurane induces epileptiform encephalogram with tachycardia.

七氟醚快速增加浓度可诱发癫痫样脑电图伴心动过速。

In another direction, the radical cyclization of thioimide with acylsilane produced simple cyclization product in low yield without expected enol silyl ether compound.

对於硫醯亚胺与矽基酮的自由基反应，则是得到低产率的简单环化产物，而不是预期的烯醇矽醚化合物。

The optimun conditions were pressure 300 Mpa,temperature 45 celsius degree,extraction time 3h and the entrainer was petroleum ether.

确定工艺条件为：压力30MPa，萃取温度45℃，萃取时间3 h，携带剂为石油醚。

Object: The antimicrobial effects of the water, 60% alcohol, 90% alcohol extract and petroleum ether, ethyl acetate, n-butanol components from Pomegranate rind against 3 kind of pathogenesis bacterial and 14 kind of epiphyte were accomplished.

目的：对石榴皮的水、60%乙醇、90%乙醇提取物以及石油醚、乙酸乙酯、正丁醇萃取物对3种细菌和14种真菌的体外抗菌试验进行了研究。

The preparation process of equisetum pratense total alkaloid includes the following steps: coarse pulverizing equisetum pratense to obtain rough powder, methyl alcohol percolation to obtain percolate, recovering methyl alcohol, concentrating, degreasing by means of petroleum ether, alkalifying concentrate, CHCl3 extracting, soda lye washing, neutral water washing, recovering CHCl3 to obtain rough alkaloid, adsorption by using silica gel column, eluting, recovering solvent so as to obtain refined EPR.

该发明是通过两个步骤来实现的：第一步，提取草问荆总碱，流程：草问荆粗粉――渗漉液――浓缩液(析胶、石油醚脱脂、氨水碱化)――碱化浓缩液(CHCl3萃取)――CHCl3层――CHCl3液(回收CHCl3)――粗生物碱――吸附硅胶柱――精致EPR。第二步，选择实验试剂、仪器、用小鼠作为实验对象，进行中枢神经系统实验，研究作用及作用机制。

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。