查询词典 ethylene

In this study, the influence of H2O and CO2 in air upon the equilibrium temperature and pressure, and the ignition delay time for ethylene combustion were investigated by a kinetics simulation method using a plug flow reactor.

本文用活塞流反应器进行动力学模拟，研究在不同初温、压强和燃气比的条件下，H2O和CO2污染组分对乙烯燃烧的温度、压强和点火延迟时间等特性的影响。

The optimum reaction conditions were: the molar ratio of ethyl acetoacetate to ethylene glycol was 1:1.8,the quantity of catalyst was equal to 2% ethyl acetaoacetate,amount of cyclohexane was 20mL,and the rea...

在优化条件下反应，苹果酯收率达到93.1%，选择性接近100%。实验表明，磺化炭是合成苹果酯的优良催化剂，与其他酸催化剂相比，它还具有活性高、用量少、无污染等突出的优点。

Effects from high-temperature and low-temperature direct chlorination on refining, energy saving and economics of ethylene chloride in chloroethylene production revamping are analyzed.

分析了高温、低温直接氯化技术对氯乙烯改造中二氯乙烷的精制、节能、技术经济等方面的影响。

Nickel nanoparticles were obtained by hydrazine reduction of nickel chloride in ethylene glycol in an air atmosphere.

摘 要：在乙二醇中用肼作还原剂还原Ni2+制备镍纳米粒子。

Nickel nanoparticles were obtained by hydrazine reduction of nickel chloride in ethylene glycol in an air atmosphere.

在乙二醇中用肼作还原剂还原Ni2+制备镍纳米粒子。

In this paper,the aqueous solution polymerization of acrylamide by using copper chloride/ethylene diamide/α chloroethyl benzene as an initiator was studied. Molecular weigh has a correlation of a straight line with the time.

原子转移自由基聚合是一种自由基&活性&聚合，自发现[1 ] 以来已应用该技术合成了一系列结构不同、性能各异的聚合物材料[2～ 3] ，并发展了多种ATRP引发体系，是活性聚合发展史上最简便的一种技术。

Different extracts were admi nistered through a stom ach tube to rats of different groups with renal calcium oxalate stones induced by ethylene glycol and ammonium chloride.

通过喂服泽泻提取物不同组分对乙二醇和氯化铵诱导的大白鼠肾草酸钙结石模型进行实验研究。

METHODS: Animal model of calcium oxalate nephrolithiasis was established by administration of 2.5% ethylene glycol+2.5% ammonium chloride 2mL two doses daily to adult male Sprague-Dawley rats in company with restriction of drinking water intake for 4 weeks.

采用定量灌胃2.5%乙二醇＋2.5%氯化铵（4mL/d，分2次给予）并控制饮水4周诱导建立草酸钙肾结石大鼠模型。

Yiqi Huoxue Paishi decoction have certain effects in curing rats that intragastrically administrated with 1.25% Ethylene Alcohol plus 1% ammonia chloride, the mechanism is reducing the Ca(superscript 2+), Mg(superscript 2+), P(superscript 3+), uric acid of the blood serum and increasing the Ca(superscript 2+), Mg(superscript 2+), P(superscript 3+), uric acid of the urine.

益气活血排石饮对1.25%乙二醇合1%氯化铵接灌胃制作草酸钙结石大鼠模型有肯定的疗效，通过降低血清Ca(上标 2+)、Mg(上标 2+)、P(上标 3+)、尿酸及肾组织草酸的含量以及增加尿Ca(上标 2+)、Mg(上标 2+)、P(上标 3+)与尿尿酸的排泄，发挥该方的治疗作用。

Methods According to the drinking water legislation in Europe threshold: 0.10mg/L NO2(superscript -, a rapid spot test method for nitrite in water was established by using an optimized composition of reagent mixture and a binary positive/negative response, conducted as follows: a tablet of a mixture of solid reagents containing sulfanilamide, N-(1-naphthyl) ethylene diamine dihydrochloride and sodium chloride was put on a spot test plate of Teflon mould, then, a drop of 30% HCl and a drop of water sample were added on the reagent material.

根据欧洲饮水法规亚硝酸盐限值(0.10mg/L)，使用一种优化的试剂混合物和二元的阳性－阴性反应，建立一种水中亚硝酸盐快速点滴检验法。结果将1片含磺胺、N-（1-萘）乙二胺二盐酸盐和氯化钠的固体试剂混合物放在聚四氟乙烯模的点滴检验板上。加1滴30%盐酸和1滴水样于试剂片上。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。