再发生

This novel reagent was treated with LDA to produce polystyrene-supported a-seleno carbanions, which reacted with alkyl halides and epoxides, followed by stereospecific selenoxide syn-elimination to give olefins and allylic alcohols respectively.

它与LDA反应形成α—硒基稳定的碳负离子，再与卤代烃或环氧化合物发生α—烷基化反应，烷基化后的树脂可以在30%的双氧水中进行氧化-消除，以良好产率和较高纯度合成了取代烯烃或烯丙基醇。

Firstly, we would investigate wetting ability of metal chelators in order to sure cleaning uniformly. Next, we would investigate corrosion rate for copper with metal chelators.

然后我们再探讨这两种螯合剂对铜金属的蚀刻率，以确保晶圆经过清洗制程之后，铜导线表面没有腐蚀现象发生。

Methods Establishing a model of whole cerebral ischemia-reperfusion in rats; examining the expressions of TrkA and NGF on cochleas assuming the method of immunohistochemistry stain; and examining the time and distribution of the cochlear hair cell apoptosis through the terminal deoxynucleotidyl transferasemediated dUTP nick end labeling.

建立大鼠全脑缺血再灌注模型，采用免疫组织化学染色方法检测TrkA和NGF在耳蜗中的表达；用TUNEL法检测耳蜗毛细胞发生凋亡的时相和分布。

Seeing that they had been betrayed, and that their denials did no good, they had to admit everything.

她们见一切都已经被发现，再否认所发生的事也没有用了，只好全部承认了。

It is thus far too easy, in the case of multiple selection, for users to select an item, scroll it into invisibility, and then select a second item, forgetting that they have now deselected the first item because they can no longer see it.

在多重选择时，对于用户来说非常容易发生这样的情况。即选择了一项，滚动。然后看不见了，选择第2项。因为不能再看到前面的项目，所以忘记了现在已经取消了对第1个项目的选定。

However, if spinal fixation has occurred, usually, treatment of dystonia is considered to be not appropriate.

但是，假如已经发生了脊柱固定，再对功能障碍进行处理就不适宜了。

It is inferred that Gukang can increase mineral contents and bone density in eunuchized male mice,promote the reconstruction of bone and improve the inner structure of bone,so as to improve the mechanical function of bone and prevent from mice fracture.

骨康能提高去睾大鼠骨的骨矿含量及骨密度，促进去睾大鼠骨结构的再建，改善骨的内部构造，从而提高大鼠骨的机械性能，避免骨折的发生。

1 When a fast-running vehicle encounters an emergency, the driver should turn to evade first and brake to slow down later so as to mitigate the damage.

5.12.2.1 车速较高时发生紧急情况，应先转方向避让，再采取制动减速，以减小碰撞损坏程度。

Firebombs were thrown at 3 more churches in Malaysia Sunday, the latest in a series of assaults on Christian houses of worship following a December 31 High Court decision allowing non-Muslims to use "Allah" to refer to God.

10日，马来西亚3座基督教堂再遭炸弹袭击，这是继去年12月31日当地最高法院准许非穆斯林用&安拉&称呼上帝以来，最新发生的教堂遭袭系列事件。

They are not florists but allow customers to reliably place the order for a specific location which is then routed through a specific florist in that area.

他们不是鲜花，但允许客户可靠的顺序发生的具体位置，然后再经由特定的花店在这一领域。

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。