查询词典 active

To obtain new functional aromatic polymer material, the reaction of acenaphthene with nitrobenzene under high active catalyst of AlCl3 was investigated at room temperature and ambient atmosphere.

为制备更多新型功能高分子中间体，研究了高活性lewis酸AlCl3催化作用下，苊与硝基苯在温和条件常温常压下的反应。

This period, social structure urgent hurriedly changes, social contradiction is unusually acerb, annex war is consecutive, culture thought is all-time and active.......

使这一时期成为中国历史上诸子百家政治学术思想大融合的重要时期，这个时期，社会结构急遽变化，社会矛。。。。。。

The results showed that the catalyst, with calcium phosphate as the main part, is active and selective in the splitting of acetal.

实验结果表明：以磷酸钙为主体的催化剂对缩醛裂解反应具有较高的活性和选择性。

Influence of active components in the catalyst and acetonitrile hydrogenation condition on behaviors of the catalyst and stability of the catalyst were investigated.

研究了催化剂活性组分和乙腈催化加氢工艺条件对催化剂性能的影响，并考察了该催化剂的稳定性。

It is because that the particle size of acetylene black is smaller than that of graphite, it is easy to disperse well among active material.

这是因为乙炔黑的粒度比石墨小，比表面积相对更大，能很好地分散在活性物质之间。

B The active ingredient is acetylsalicylic acid.

有效成份是「乙水杨酸」。

"To achieve this, we have taken a pro -active ap pro ach in three areas."

为了达到这一目标，我们在三个方面采取了积极的方法。

Immature source rock ; fatty acid ; carbonate ; mineral catalysis ; reaction rate constant ; active energy

未熟烃源岩；脂肪酸；碳酸盐；矿物催化；反应速率常数；活化能

First, the speed of the reaction between mud acid and rock is very fast, the effective distance of acid is short, active acid can not reach deep formation.

首先，高温下常规土酸与地层矿物反应速度极快，酸液有效作用距离短，活性酸不能到达地层深部；其次，HF与铝硅酸盐的化学反应不是简单的一次反应，其副产物氟硅酸和氟铝化物还可与铝硅酸盐发生二次反应和三次反应，形成一系列不溶性的沉淀物，对储层造成严重伤害；第三，高温情况下酸液对井下管柱及工具腐蚀性很强，对缓蚀剂性能要求高。

Third, stage film and television modelling:Main body aluminum system frame modelling, theater curtain, hanging lamp, acoustic support frame, navigation hollow box and special-purpose active work table.

舞台影视造型：主体铝制框架造型，幕布、吊灯、音响支撑框架，航空箱及专用活动工作台。

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。