查询词典 ethylene

The polarization fatigue mechanism and the effect of donor doping Bi〓 on ferroelectric properties of PZT thin films are also revealed. The system of zirconium oxynitrate—tetrabutyl titanate—lead acetate anhydrate—ethylene glycol is adopted to prepare stable PZT sol.

本文采用X射线衍射分析、X射线光电子谱分析、透射电镜、原子力显微镜、扫描电镜、红外光谱分析以及铁电性能测试等研究了溶胶-凝胶法制备PZT铁电薄膜的成胶机理及PZT铁电薄膜的微结构、界面结构及铁电性能，并考察了施主掺杂Bi〓对薄膜铁电性能的影响规律，提出了铁电极化疲劳机制。

The score of renal calcium oxalate crystallization of 12%,25% medlar soak and apozem was reduced 38.7%, 54.8% and 48.4%, 58.1%(P.01) compared with the ethylene glycol drinking group. Conclusions: LBP can reduce the formation of renal calcium oxalate crystallization. The mechanism is to protect from damage by free radical and reduce the apoptosis of renal tubular epithelial cell by hyperoxaluria.

适量的枸杞多糖可减少饮用诱石剂大鼠的肾草酸钙结石形成，其作用机制是通过抗氧化反应，减少自由基对肾组织的损伤，从而减少高草酸尿对肾小管上皮细胞的凋亡。

The azeotropic point of acetonitrile-water can be eliminated by ethylene glycol-CaCl_2 solvent,and relative volatility of acetonitrile to water can be increased.

乙腈是一种重要的化工原料，同时也是一种重要的有机溶剂，在溶剂回收的过程中经常遇到乙腈和水的分离问题。

Compared with thermal cracking of JP-10, the conversion ratio of the catalytic cracking in the temperature range from 500 to 650 ℃ is evidently enhanced. The predominant products of the catalytic cracking are methane, ethane, ethylene, propane, propylene, benzene and benzenoid hydrocarbons.

在500～650 ℃温度范围内，与热裂解相比，分子筛催化可显著提高裂解转化率，主要产物有甲烷、乙烷、乙烯、丙烷和丙烯，以及苯和苯的同系物等。

In p - benzoquinone solution with ethylene glycol as solvent,emission lines from PBQH'and R2 were obtained.

实验结果指出，在乙二醇溶液中得到苯半醌自由基和以碳为中心的自由基_2。

In this thesis, the structural heterogeneity of several novel polyolefin resins, including biaxially oriented polypropylene and propylene-ethylene random copolymer, was investigated.

本论文工作从聚合物链结构的多重非均匀性出发，研究了几种新型聚烯烃材料，包括用作双向拉伸薄膜的等规聚丙烯树脂和用作热水管材的无规共聚聚丙烯树脂的链结构。

In combination with Ni_2 as phosphate scavenger, binuclear nickel complex displayed high catalytic activity for the polymerization of ethylene.

以Ni_2为瞵攫取剂，该双核中性水杨醛亚胺镍化合物对乙烯聚合显示出较高的催化活性，并考察了聚合反应条件对其催化性能的影响。

GA treatment restrained the respiration rate and ethylene production. 100mg.L-1ABA and 1000 L.L-1 ethephon evidently increased TSS and total titratable acidity acid content of green-mature fruit. The effect of ABA was more significantly than 1000 L .L-1ethephon, this suggested'ABA was the main hormone of influencing scenescence of'brumal jujube'fruit.

白熟冬枣采后冷藏过程中，内源ABA含量逐渐上升，贮藏后期有峰值出现；IAA和GA含量呈逐渐下降趋势；乙烯利和ABA处理都促进了内源ABA的积累和IAA和GA含量的下降，而ABA的作用比乙烯利明显；说明ABA调控果实的衰老是通过影响内源激素的变化而起作用的。

Novel ZnSe nanosheets with tunable size and phase have been facilely synthesized via hydrothermal routes in the presence of neutral butylamine as structure-directing agent and ethylene diamine tetraacetic acid as stabilizer.

以乙二胺四乙酸为稳定剂、丁胺为结构导向模板，采用水热合成方法制备了尺寸和晶型可控的ZnSe纳米片晶；利用XRD，TEM，SEM以及紫外-可见漫反射等手段对所得的产物进了表征，结果表明，通过改变水热温度和BA用量，可以实现ZnSe纳米片晶的大小和物相的调控，并初步分析了其形成过程

It was found that the dehydration of ethanol over zeolite catalyst followed carbonium ion reaction mechanism, and thus the formation of ethylene, propylene and propane as the main products was well explained.

乙醇在分子筛催化剂上催化脱水反应过程遵循正碳离子机理，较好地解释了主要产物乙烯、丙烯和丙烷的生成机理。

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。