So when Moody's says a collateralized debt obligation, a corporate bond and a sovereign issue are all rated AA, the implication is that the three types of bonds are equally healthy.
也就是说,当穆迪将一种债务担保证券、一种公司债券和一种主权债券均评为AA级,那就意味着穆迪认为这三种债券的信用程度是相同的。
In valence bond theory, the focus is on discussing the bonds, but it should look very familiar to you, because there's two types of bonds that we want to discuss here.
在价电子成键理论中,所关注的是讨论成键,但这对于你们来说应该很熟悉,因为这是我们要讨论的两种键。
Since the survival of an overlay is the bond, concrete must be clean and the overlay properly applied if these types of creations are expected to last.
由于一个覆盖生存是债券,具体要廉洁和应用得当,如果这些类型的作品,预计最后的覆盖。
So in terms of thinking about ethane, we actually have two bond types that we're going to be describing just in terms of the carbon-carbon bond and then the carbon h bonds.
对于乙烷,我们有两种键,我们继续讨论一下,碳碳键,和碳氢键。
So, in general what we see, and this is always true if we're comparing the same atom, and in general, if we're comparing different types of molecules, but we know that a single bond is always weaker than a double bond, which is weaker than a triple bond.
通常我们会看到,这对比较相同原子来说总是正确的,通常,如果我们要比较不同种类的分子,但我们知道单键,总是要比双键弱,双键总是要比三键弱。
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