二乙胺

In 2000 the annual ethylene diamine amount used was 11140 tons, estimated that this year will amount to 14000 tons.

2000年全年乙二胺用量为11140吨，预计今年将达到14000吨。

Use nitrite and the Sulfanilic acid diazotization in acidic conditions,with dinitroaniline coupling formation color reaction,established the method of using the color reaction Determination Chinese cabbage s Nitrite content.

在酸性条件下亚硝酸盐与对氨基苯磺酸重氮化后，再与盐酸萘乙二胺偶合形成颜色反应，建立了用比色法测定大白菜中亚硝酸盐的方法。

The results show that when molar ratio of epichlorohydrin and dimethylamine is set as 1.5:1 and the amount of 1,2-diaminoethane is 3%, polyamine flocculants get the best viscosity and cationic degree and have excellent decoloration efficiency through the adsorption and subsequent formation of particle-polymer-particle bridges.

结果表明，环氧氯丙烷和二甲胺的摩尔比为1.5：1，乙二胺加入量为3%时，聚合物的粘度和阳离子度最大，具有较强的吸附架桥和电中和作用，对染料废水有较好的脱色效果。

The purified active substance is composed of alternating disaccharide units (glucuronic acid and N-acetyl galactosamine).

单纯的活性药物成分由若干交互的二糖单元（葡萄糖醛酸和N－乙酰－半乳糖胺）连结而成。

The results show that these derivatives can be obtained in the yield of over 90％ in the presence of DMF when using ethyl acetate as a catalyst.

结果表明，以N，N-二甲基甲酰胺为溶剂，以乙酸乙酯为催化剂的合成路线，均可以以90％以上的得率合成出上述化合物。

The calculated IC times of chl-a in ethyl acetate, tetrahydrofuran and dimethyl formamide are 141, 147, and 241 fs, respectively.

计算得到的叶绿素a分子在乙酸乙酯、四氢呋喃和二甲基甲酰胺溶剂中的内转换时间分别是141、147和241 fs。

Ethylenediamine the year 2000 the amount of 11,140 tons and is expected to reach 14,000 tons this year.

2000年全年乙二胺用量为11140吨，预计今年将达到14000吨。

Effects of dealumination and metal modification of mordenite catalyst on synthesis of ethylenediamine were studied.

研究了丝光沸石脱铝及金属改性等对合成乙二胺反应性能的影响，通过X荧光和XRD等手段对所得催化剂进行了表征。

In part three, the characteristics of RBH and rhodamine B ethylenediamine were compared.

第三部分比较了RBH和罗丹明B-乙二胺(Rhodamine B ethylenediamine，RBE)的性质。

The process of copper electroplating with ethylenediamine was studied.

对乙二胺镀铜工艺进行了研究，讨论了Cu~(2+)浓度、pH值、温度、电流密度等因素对电镀铜效果的影响。

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。