醚的

He TXD1200 Series has been developed for pumping light petroleum products such as diesel, heating oil, gasoline, kerosene, avgas, various biofuels, such as biodiesel and ethanol.

XD1200系列产品已被用于汲取输送石油醚类别的燃料，诸如柴油、民用燃料油、汽油、煤油、飞机专用汽油以及像乙醇和生物柴油等不同的生物燃料。

Ballerinas expressed their ethereal characters by dancing on the tips of their toes and wearing net and gauze.

ballerinas表示醚字舞的小费自己的脚，穿着网纱。

4 Kinds of methylthiazoline multithioether s were synthesized from the nucleophilic substitution of 5-methyl-thiazolidine-2-thione reacting with bromides,respectively.

通过5-甲基-2-噻唑烷硫酮与溴代物的亲核取代反应合成了四种甲基噻唑啉多头硫醚，利用红外光谱、核磁共振(1H NMR)光谱和元素分析对这四种化合物的结构进行了表征。

Treatment of the diacetoxy-calix [4] arene with a series of ditosylates in dry MeCN in the presence of NaOH resulted in formation of electron-rich calix [4] areneocrowns, which reacted with 4, 4'-bipyrindinium and p-bis -benzene at room temperature in dry MeCN to afford self-assembling [2] catenanes by π-π stacking interaction.

以杯[4]芳烃为原料，通过三氟乙酸铊将其氧化成醌，醌类化合物在Zn粉、冰醋酸、少量盐酸和过量的乙酸酐中反应得到双乙酰化产物，利用氢氧化钠使其水解，然后再与各种对甲苯磺酸二酯进行环化反应，得到一系列具有富电子空腔的杯[4]芳烃并冠醚。

Methods: Oxygen–glucose deprivation injury was induced in pure neuronal or neuronal–glial cocultures 24 h after preconditioning with xenon and/or sevoflurane.

缺氧缺糖损伤是预处理氙气和/或七氟醚24 h后纯粹的神经元或神经胶质联合培养所致的。

The reactions involved in the co-curing are: cyclodimerization and cyclotrimerization of cyanates, polyetherfication of epoxy groups and cyclotrimerization of cyclic dimers, as well as the formation of oxazolidinone rings.

反应历程首先是氰酸酯发生自聚反应形成二聚体或三聚体，然后二聚体可进一步共聚形成三嗪环，此过程伴随着环氧基的聚醚反应，最后是三嗪环与剩余的环氧基反应形成NFDA1唑烷酮。

The polymerization of conjugated dienes on a cationic exchange resin was investigated.

在一连续的固定床反应器中，采用强酸性阳离子交换树脂催化剂，研究了共轭二烯烃在醚化条件下的反应行为。

With the 9,9-bisfluorene , we developed new methods to synthesis of ethers. Different synthesis methods are compared.

对9，9-双芴再进行甲基化反应，提供了合成醚类给电子体的方法，详细比较了各种方法的差异。

Meanwhile. new derivatives' forecost and prospects of cellulose ethers were also pointed out.

并提出了一些具有发展前途的纤维素醚类新品种及其潜在的应用前景。

The study of host-guest chemistry based on crown ethers and secondary dialkylammonium salts is an important part in supramolecular chemistry.

基于冠醚类和二级铵盐的主客体化学是超分子化学领域研究的热点之一。

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。