醚的

The results show that the catalytic activity is mainly affected by the acid strength and number of acid center.

对合成甲基叔丁基醚反应的几种沸石分子筛进行研究，认为催化剂的活性主要受催化剂的酸强度及酸中心数影响。

The reaction characters and disciplinarians were summarized, which were described as self-chemical ionization reactions.

利用离子阱质谱的原理和特点，研究了小分子醇、醚、胺、醛、酮等有机化合物(分子量小于 2 0 0 )在离子阱里的分子离子反应，总结了反应特点和规律，并把它归类为自身化学电离反应。

Onset decomposition temperature of the polyimide was at 508 ℃ under nitrogen atmosphere, and its glass-transition temperature was at 288 ℃. The polyimide film had strengths at break at 91 MPa, elongations to break of 10%～15%, and initial moduli at 1.7 GPa.

此外该聚醚酰亚胺还表现出良好的热性能和机械性能：玻璃化转变温度在288 ℃，氮气中起始分解温度在508 ℃；该聚合物薄膜的拉伸强度为91 MPa，断裂伸长率在10%～15%，起始模量为1.7 GPa。

The pure cotton fabrics finished by perfume compound microencapsulation with melamine resin as shell material were described.

论述了用部分醚化的蜜胺树脂作为壁材，对香精进行胶囊化制成香精微胶囊，再对纯棉织物进行香味整理的过程。

The reaction was stirred for the given time (the reaction was followed by TLC) after which the methanol was removed and the residual ionic liquid was extracted with diethyl ether (3 15 mL).

反应搅拌为在给定的时间（反应，其次是薄层色谱法）后，其中甲醇被删除，剩余的离子液体中提取二乙酯基醚。

Archaean cell walls lack murein, a common component of bacterial cell walls, and their lipids have ether links rather than ester links.

古细菌的细胞壁缺乏细菌细胞壁组成的普遍物质-胞壁质，其连接是醚连接而不是酯连接。

The flame retardant asphalts were prepared with Liaohe AH-70 type high-quality paving asphalt as feedstock,decabromo-diphenyl oxide,decabromo-diphenyl ethane,antimonous oxide et al as flame retardants,aluminum hydroxide as smoke inhibitor and drawing off oil high in aromatics as dispersion medium under the condition of heating and mixing.

以辽河AH-70高等级道路沥青为原料，十溴联苯醚、十溴联苯乙烷、三氧化二锑等为阻燃剂，氢氧化铝为抑烟剂，富含芳烃的抽出油为调和剂，在加热搅拌的条件下，制得了阻燃沥青。

Also Dirac stated in 1951 in an article in Nature, titled Is there an ether?

&狄拉克还指出，在1951年的一篇文章的本质，题目是：&今天有一个醚？

Grignard Reagent ofmagnesium reacts with halide hydrocarbon, which and Se powder is prepared toSe-Mg Grignard Reagent.

在3倍镁量反应物和15％CuI，在反应温度在45℃反应时间为10小时的条件，并不能有效的合成不对称有机硒醚。

Bis-silylhydrides were prepared by nickel-catalyzed olefination of the corresponding aryl dithioacetals with Grignard reagent followed by LAH reduction.

镍催化双硫缩醛化合物与格林纳试剂偶合反应可以方便的得到乙烯基矽基醚，再经由LAH还原反应，得到相对应的矽基氢化合物。

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。