有包含相同数量的列的分区键。

Have partitioning keys with the same number of columns.

youdao

是否有一个规范来描述连接键实体(例如客户和位置)的业务规则？

Is there a specification describing the business rules to join key entities such as customer and location?

youdao

我们现在可以考虑成键了，现在我们有4个等价的轨道，每个上面有1个电子。

So we can think about now doing bonding, and now we have four equal orbitals with one electronic each.

youdao

So, if we hybridize just these three orbitals, what we're going to end up with is our s p 2 hybrid orbitals.

我们会看到现在有3个未配对的电子，可以成键。

麻省理工公开课 - 化学原理课程节选

So we can think about now doing bonding, and now we have four equal orbitals with one electronic each.

我们现在可以考虑成键了，现在我们有4个等价的轨道，每个上面有1个电子。

麻省理工公开课 - 化学原理课程节选

That is to say brick work in high temperature furnaces, maybe tiles on the Shuttle, to resist high temperatures because of the high internal bonding.

它在能够承受高温炉的温度，例如瓷砖，能够耐受高温,因为它们有强的内部键作用。

麻省理工公开课 - 固态化学导论课程节选