当碱性纤维素与盐酸的钠盐反应，羧甲基醚钠盐生成。
When alkali cellulose is reacted with the sodium salt of chloroacetic acid, the sodium salt of the carboxymethyl ether (cellulose-O-CH2-CO2-Na +) is formed.
二甲基醚(DME)是一种新型的、清洁的柴油机替代燃料。
Dimethyl ether (DME) is a new, clean alternative fuel of diesel.
利用该模型对二甲基醚碰壁过程进行了模拟计算，并与柴油作了对比分析。
The spray impingement of DME is simulated and compared with that of diesel.
大量研究表明二甲基醚（DME）是压燃式发动机的一种理想清洁代用燃料。
Many investigations indicate that Dimethyl Ether (DME)is an excellent alternative clean fuel for compression-ignition engines.
本发明公开了侧向二氟亚甲基醚桥键双末端烷基三联苯及其制备方法与应用。
The invention discloses side difluoro methylene ether bridged bond paired-end alkyl terphenyl, a preparation method and application thereof.
聚四亚甲基醚二醇(PTMEG)是生产氨纶和聚氨酯弹性体的重要原料之一。
Polytetramethylene ether glycol (PTMEG) is one of important materials for production of spandex and thermoplastic polyurethanes elastomer (PU).
结果表明酚醛树脂的热稳定性与二亚甲基醚键的存在很有关系，随着醚键的增多而热稳定性降低。
The results indicated that the thermal stability of phenol-formaldehyde resin was related to the presence of dimethylene ether linkage. The thermal stability decreased as the ether linkage increased.
介绍了在高压环境下对二甲基醚（DME）喷雾一般特性的试验研究结果，并与柴油的喷雾特性进行了比较。
This paper introduces the authors primary research results of the study of the DME spray characteristics under high fuel injection pressure.
取以杂多酸为催化剂，一步法合成聚四亚甲基醚醇(PTMG)，对影响聚四亚甲基醚醇单程收率的各因素进行了讨论。
Polyoxytertramethylene (PTMG) is synthetized in one step using heteropoly acid as catalyst. We discussed the factors which influenced the yield of PTMG.
二甲基醚(DME)应用前景明朗，但应用技术尚不成熟，目前二甲基醚在柴油机上进行推广应用还处于研究、实验阶段。
Prospects of Dimethyl ether (DME) is becoming clear, but the technology is not mature yet. The current DME in a diesel engine is still in the promotion of applied research and experimental.
在详细反应动力学研究基础上，通过对二甲基醚(DME)均质压燃燃烧反应途径和敏感性分析，建立了均质压燃二甲基醚的简化动力学模型。
A reduced model of dimethyl ether (DME) was developed based on the detailed kinetics model by analyzing in reaction paths of combustion of DME and sensitivity.
以前，MTBE（甲基叔丁基醚）曾作为汽油充氧剂，但是，在2004年，人们发现它污染了地下水，所以就不再使用它了。
Previously, MTBE (methyl tertiary-butyl ether) was the oxygenate of choice, but fell out of favour in 2004 when it was found to contaminate ground water.
目前铅和甲基叔丁基醚(MTBE)等添加剂被叫停，取而代之的是在汽油中添加少量酒精，这样提升辛烷水平能防止负载中引擎产生爆震。
With lead and MTBE additives now phased out, spiking petrol with a small amount of ethanol raises its octane level enough to prevent the engine from "knocking" under load.
根据酯在碱性条件下水解反应生成醚的原理，研究了以甲基硫酸钠废渣为原料制备二甲基硫醚的方法。
Based on the principle of ester hydrolyzation to ether in alkali condition, the process for preparation of dimethyl sulfide from sodium methyl sulfate residue was investigated.
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。
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.
以前广泛使用的增氧剂是甲基叔丁基醚，后来有研究发现甲基叔丁基醚会污染地下水，因此在2004年久停止使用了。
Previously, MTBE (methyl tertiary - butyl ether) was the oxygenate of choice, but fell out of favour in 2004 when it was found to contaminate ground water.
甲基叔丁基醚(MTBE)作为一种新型的无铅汽油添加剂被广泛应用以减少含铅汽油对空气的污染。
Methyl tert-butyl ether (MTBE) is widely used as an addictive in unleaded gasoline to curb the air pollution caused by leaded gasoline.
对国内外有关甲基叔丁基醚（MTBE）毒性的研究结果作了综述。
The study results of the toxicity of methyl tertiary butyl ether (MTBE) were reviewed.
甲基叔丁基醚(MTBE)是一种新型的汽油添加剂，被用来提高汽油辛烷值和减少汽车尾气中有害物质的排放。
Methyl tertiary butyl ether (MTBE), a new gasoline additive, is added to gasoline as an octane enhancer and used to reduce automotive emissions.
甲基叔丁基醚(MTBE)是一种新型的汽油添加剂，常用来提高汽油辛烷值和减少汽车尾气中有害物质的排放。
Methyl tertiary butyl ether (MTBE) is a new gasoline additive used to increase gasoline octane value and decrease the exhaust of some harmful pollutants, but there is still debate on its toxicology.
综述甲基叔丁基醚(MTBE)的国内外生产和供需状况以及生产工艺技术经济指标对比。
The production, supply and demand of methyl tert-butyl ether (MTBE) at home and abroad are reviewed and the techno-economic indices of production technologies are also compared in this paper.
理化性质：白色结晶性粉末、溶于水、稀醇、液氨和二甲基甲酰胺，而不溶于乙醇、醚和丙酮。
Characters: White crystalline powder, soluble in water, dilute alcohol, liquid ammonia and dimethylformamide, and not soluble in ethanol, ether and acetone.
研究了二甲基二硫醚(DMDS)废气的处理技术。
A treatment process for waste gas from dimethyl disulfide (DMDS) production was studied.
举例来说，梨型糖果气味的酯和丙酮与糖尿病有关联，氨则与肝炎有关，而二甲基硫醚则预示着硬化。
For example, the odour of 'pear drops' esters and acetone in relation to diabetes, ammonia in relation to hepatitis, and dimethyl sulphide to cirrhosis.
催化裂化汽油醚化工艺是使汽油中异构烯烃与甲醇，在树脂型催化剂作用下醚化生成甲基叔烷基醚类，使汽油辛烷值提高。
The etherification process for FCC gasoline is to react methanol with the isoolefines in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst, so as to enhance the octane number.
探讨了以异丙醇-水作溶剂，通过一次醚化，制备高取代度、高粘度羧甲基淀粉醚的最佳条件。
This paper discusses the optimum condition for preparing carboxymethyl starch with high degree of substitution and high viscosity by using the solution isopropanol-water through etherification.
阐述了二甲基硫醚合成反应所用催化剂的选择和反应器中催化剂装填高度的计算。
This paper expounds the selection of the catalyst of the. synthetic reaction of dimethyl sulfide and the calculation of the loading height of the catalyst in the reactor.
国家艺术燃料含氧化合物，特别是地下水中甲基叔丁基醚，是。
The state of the art on fuel oxygenates, and in particular of MTBE in groundwater, is presented.
国家艺术燃料含氧化合物，特别是地下水中甲基叔丁基醚，是。
The state of the art on fuel oxygenates, and in particular of MTBE in groundwater, is presented.
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