开始发生

At this critical temperature, changes begin to take place in the molecular structure of the metal.

在这种临界温度时，金属的分子结构开始发生变化。

According to Barbara Curran's recent study, in the period between 1951--1984, changes in size, age and sex distribution began to occur.

根据巴巴拉·柯伦最近的研究，在1951年至1984年期间，法律职业在规模、年龄和性别分布等方面开始发生变化。

During the pendency of these administrative actions, other developments of relevance to the snail darter issue were transpiring.

在这些行政行动悬而未决之时，其他和蜗牛镖有关的事情也开始发生。

The results showed that the preoxidation of PPESK was a free radicals reaction,which was initiated by the decomposition of proton in aromatic ring and sulfone functional group and the removal of H_2O and SO_2.When the preoxidation temperature was above 460℃,the radical reaction was initiated by the decomposition of ketone functional group and the removal of CO_2.At last,the three-demensional cross-linking structure containing polyaromatic ether and biphenyl was formed.

研究表明，PPESK的预氧化过程是一个自由基反应过程，始终伴随着芳香环质子和砜基官能团的脱除引发的自由基交联反应，脱出H_2O与SO_2；当预氧化温度超过460℃后，随着反应的进行，由羰基官能团分解引发的自由基交联反应开始发生，脱出CO_2，并最终形成了含有大量聚芳醚和联苯结构的稳定的三维空间网状结构，进而完成PPESK由热塑性材料向热固性材料的转化。

As a result, the tone of China's diplomacy on the environment has begun to shift.

其结果是，中国在环境问题上的外交基调开始发生了转变。

The results showed that the structure of mammary gland without leptin keep normal and there were little apoptosis cells in them. But in explants with leptin, the duct and gland alveolus collapsed and the apoptosis cells increased. It showed that leptin induced mammary gland apoptosis

结果显示，不加瘦素培养的组织形态保持较好，凋亡细胞较少；加瘦素培养组织的导管和腺泡结构已经开始发生解体，组织中有较多的凋亡细胞，证明瘦素在退化期乳腺组织中可明显诱导细胞凋亡。

And then after Xin chou, traditional political structure broke up and ethnicism developed into a new stage.

辛丑以后，传统政治结构开始发生崩溃，民族主义发展到新的层次。

The boundary of Holocene has been discussed based on the first hard clay.

在宁波地区，全新世的底界不能简单地划在第一硬土层和海相层之间，海侵可能早在晚更新世末期就开始发生了。

"I think they now are what you'd have to say is a bona fide contender for a playoff this year," Jackson said before the game."They're starting to jell as a basketball club after a horrific start and now they've made a trade that's made sense to their personnel."

"我想你必须要说明的一点是他们正在为争得今年季后赛的资格而努力拼搏着，"杰克逊在赛前说，他们在经历了一个糟糕的赛季开端后现在正开始发生化学反应了，而且现在他们做出了一桩对人员调整起到意义的交易。

Then the magic things are going to happen.....

接下来的奇妙的事情就开始发生了。。。。。

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。