这基于这样的理论,即近距离,非键相互作用是排斥的,即立体应变。
This is based on the theory that close-range, nonbonded interactions are repulsive, i.e. Steric strain.
它们使用轨迹球移动指针和滚动屏幕,但是这更像是指针-键功能而不是鼠标指针。
They use a trackball to move the cursor and scroll the screen, but it is more like cursor-key functionality rather than a mouse pointer.
当将数据分解成多个具有外键关系的表时,这尤其重要。
This is important when data is decomposed into multiple tables having foreign key relationship.
So it doesn't matter how big the dictionary is, you can instantaneously retrieve the value associated with the key. Extremely powerful.
因为你可以在线性时间,内得到想要的键对应的值,这太强大了。
So in addition to having these two carbon bonds, we actually also have four carbon hydrogen bonds in addition to our carbon-carbon bonds.
在这碳碳之间的键以外,我们还有四个碳氢键,除了我们的碳碳键外。
And so this lower level is called a bonding orbital, and it is a bonding molecular orbital.
所以能级较低的轨道叫做成键轨道,这就是成键分子轨道。
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