催化作用

Tolerance has the characteristics of absorbing and integrating many functions. It supports and catalyzes the city's formation and development.

它具有吸纳和整合诸多力量的特征与功能，对城市的形成和发展起了基础性的支撑与催化作用。

Wereport the synthesis of an alkyl imidazolium salt supported pyrrolidine amide organocatalyst L-1 and its use and recycling in Aldol condensation reaction.

在这里，我们小组报道了用脯氨酸为原料合成了一种双官能团的离子液体接枝的新型有机催化剂并应用于Aldol缩合反应，它和脯氨酸具有相似的催化作用，可以有效地促进反应的进行。

The main species of the antimony catalysts are antimony trioxide, antimony acetate and the recent widely concerned ethylene glycol antimony.

此外，用于酯交换反应的锰、锌、钙、钴、铅等金属的醋酸盐对缩聚反应也有一定的催化作用。

This heating is done in steps with rest periods of about 30 min between each temperature increment, this stepwise heating permits specific amylases and proteinases to function before they are heat inactivated.

该加热过程分段进行，每次升温前有30min左右的停歇期，这种阶梯式加热使得特殊的淀粉酶和蛋白酶在热失活前起催化作用。

A similar enlargement in the digestive tract of annelids and insects.

消化道里分泌的酶，对脂肪分解有催化作用。

A couple of enzymes catalyse the chemical transformation from tyrosine to the resulting pigment.

酶通过催化作用把酪氨酸转化为色素，而酶的活化力受到细胞膜的影响。

And if that were not practical enough, others are looking at the role snowflakes have in catalysing the transformation of ozone into normal oxygen.

这也许还很难以付诸实用，（这个，，怪怪的，是这个意思么？），另外一些科学家正在探索雪花在臭氧转变成普通的氧气过程中的催化作用。

And if that were not practical enough, others are looking at the role snowflakes have in catalysing the transformation of ozone into normal oxygen.

不是 &难以付诸实用&﹐而是&如果這還不夠實用的話&另外一些科学家正在探索雪花在臭氧转变成普通的氧气过程中的催化作用。

Increased rate of reaction, in the presence of catalyzers, is called catalysis, or catalytic action.

有催化剂时，反应速度的加快叫做催化作用。

The results show that:(1) Light-calcined MgO powders prepared with nature magnesite or Mg2 both are of face-centered cubic structure.

结果发现：水化前后得到的都是面心立方晶体结构的MgO，但水化前得到的轻烧MgO中仍存在官能团CO32-的残留物，而水化后得到的轻烧MgO中不存在CO32-，而且颗粒变得较易破碎，大大减少了细磨时间；再者，水化后的轻烧MgO活性较高，加上Mg2在分解过程中残留的水分对MgO 的烧结起催化作用，因此，使其经高温锻烧制得的烧结镁砂的开口气孔率由水化前的2.0%下降到0.6%，闭口气孔率由水化前的6.1%下降到2.8%，体积密度由水化前的3.29g/cm3提高到3.46g/cm3。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！