烯烃的双键：重点是反应活性。
这些原子有较高的反应活性。
酸催化比碱催化具有更高的反应活性。
Activity of acid catalyst was higher than that of base catalyst.
反应活性与室温下的氧相似。
Reactivity is similar to that of oxygen at room temperature.
从这些参数比较表明，颗粒度的大小对反应活性存在明显的影响。
These parameters demonstrate that particle size has great effect on the reaction activity.
由于使用了活性较大的催化剂，反应进行地很彻底。
With more active catalyst, the reaction was carried out completely.
这种细胞活性很像一次失控的免疫应答反应。
The cellular activity resembles an immune response that has spiraled out of control.
未来的城市将由能对环境做出反应的活性、动态材料构成。
Our cities will be made from living, dynamic materials that respond to the environment.
已知的严重过敏反应的活性物质或任何辅料的产品。
The severe allergic reaction of known or any materials active material of the product.
该催化剂具有高活性、高选择性，且具有反应控制相转移催化剂的特性。
The catalyst has high activity, selectivity and the characteristic of reaction controlled phase transfer catalyst.
其反应速度与酶的活性成正例。
The rate of the reaction is directly proportional to the enzyme activity.
考察了空速、进料浓度、反应温度等因素对催化剂活性的影响。
The effect of space velocity on catalyst was studied as well as concentration and temperature.
近年来发现许多化合物都有希尔反应抑制活性。
Recently, many compounds have been found to have activities of Hill Reaction.
所以改变反应的介质是研究如何提高酶活性的重要方面。
Therefore the reaction medium is the very important of studying how to improve the activity.
所以改变反应的介质是研究如何提高酶活性的重要方面。
Therefore the reaction medium is the very important of studying how to improve the activity.
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