This paper briefly summarized the new progress of theoretical studies on synthesize and characterize the compounds with multiple bonds between heavier main group elements, especially heavy cumulenes.

简要综述了重主族多重键，尤其是重主族累积多烯化合物的合成及结构表征和理论研究方面的最新进展。

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We know nitrogen bonds multiple bonds, so let's look at nitrogen.

我们了解氮气中有多重键，我们看看氮气。

麻省理工公开课 - 固态化学导论课程节选

Well, let's look at multiple bonds.

下面，让我们讨论一下多重键。

麻省理工公开课 - 固态化学导论课程节选

Two issues that small investors often run into when looking at purchasing municipal bonds are how can they diversify their risk across multiple municipal bonds, and how can they afford to diversify the risk with large minimum investments required?

FORBES: Tax-Free ETFs For The Little Guy

Sergio Trigo Paz was having conversations with multiple investors that planned to hold debt to maturity, and were matching the income flow from the emerging market bonds that they were buying to specific liabilities.

FORBES: Connect