查询词典 ether

Methyl tert-butyl ether is a gasoline additive used to improve air quality by reducing emissions.

土壤/地下水被汽油、柴油及其他石油制品所污染是一个愈趋普遍且严重的问题。

The fundamentals of the degradation of Methyl tert-Butyl Ether in aqueous solution using Fenton Reagent were investigated.

本研究探讨微电化学抛光之加工参数，针对模具业常用的模具钢SKD11进行各种参数实验。

Methyl tertiary butyl ether is a new gasoline additive, which is used to increase the combustion of gasoline and to reduce the emission of harmful exhausts from automobile.

甲基叔丁基醚是一种新型的汽油添加剂，被用来提高汽油燃烧效率，减少汽车尾气中有害物质的排放。

Environmental Protection Office of the State of New York on the 22nd release of the study found that, although in 2004 in New York have banned the use of methyl tert-butyl ether, but the pollution remains a threat to drinking water supply to Long Island aquifer.

环境保护的纽约州办事处对22日公布的研究发现，虽然在2004年在纽约已禁止使用甲基叔丁基醚，但污染仍然是饮用水供应构成长期的威胁岛的含水层。

The preparation process of SO4 2-/TiO2 type of solid superacid catalyst used for the synthesis of propylene glycol methyl ether propionate was investigated.

研究了合成丙二醇甲醚丙酸酯用固体超强酸催化剂SO4 2-／TiO2的制备工艺，得到了催化剂制备的适宜工艺。

Objective To investigate the effects of methyl tertiary butyl ether on the FOS protein in central nervous system of the rats. Methods 54 SD healthy adult-rats weighed 180~220g were involved in this study.

目的 通过研究甲基叔丁基醚对大鼠中枢神经系统Fos蛋白的影响，探讨MTBE对中枢神经系统急性毒作用部位。

Oxidation of methyl tert-butyl ether, a common additive to gasoline,which is one of organic pollutants in the environment, was investigated. Based on the ozonation mechanism of MTBE,the oxidation properties and the intermediates were investigated.

文章针对汽油添加剂甲基叔丁基醚对环境日益严重的污染问题，在臭氧氧化MTBE反应机理研究的基础上，对反应特性及其中间产物进行了研究。

Methyl tert-butyl ether; determination ; gas chromatography ; ambient air

甲基叔丁基醚；测定；气相色谱；环境空气

The article explained the study on oil extraction with petroleum ether (60~90℃) from Xanthoceras sorbifolia Bunge. through single factor test and orthogonal test. It confirmed the optimum extraction condition were as follow: particle size 2 mm,extraction temperature 90℃,extraction time 10 h,ratio of solvent to seed 5:1.

摘要以石油醚（60~90℃）为溶剂，通过单因素和正交实验优化了提取文冠果种子油工艺，得到的最佳工艺参数为：种仁粒径为2 mm，提取温度为90℃，提取时间为10 h，料液比为1：5。

If you wish to ex ercise y our right to subscr ibe for all the Rights Shares specified in this P AL, you should lodg e the PAL in ac cordance with the instr uctions pr inted herein, tog ether with a remittance for the full amount pa yable on acce ptance,with the Compan y's Branch Registrar , Tricor Standard Limited, 26/F Tesbury Centre , 28 Queen 's Road East, Wanchai, Hong K ong by no later than 4:00 pm on Monda y, 6 Apr il 2009. All remittances must be made in Hong K ong dollars and must

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。