The American International Group, Fannie Mae, Freddie Mac, General Electric and the municipal bond guarantors Ambac Financial and MBIA all had triple-A ratings.
美国国际集团、房丽美、房地美、通用电气、市立债券担保人——美国债券保险公司、MBIA都曾经拥有3A的评级。
Lysis of a bond produced by the passage of an electric current.
电流引起的化学键的分解或溶解过程。
A nonpolar covalent bond happens when both atoms have the same strength of electric attraction for the Shared electrons.
两个原子对共用电子对具有相同的引力时，则形成非极性共价键。
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