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。
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.
鉴于重键化合物的重大作用，有机合成工作者对此类化合物的合成已做了大量的工作，各种合成方法不断涌现出来。
In view of these great role, organic synthesis workers have done a lot of work on the field of Carbon-Carbon multiple-bond compounds. All kinds of synthetic methods continuously appear.
物理数据或键的连续性对于表扫描或键-索引扫描的速度十分重要。
Contiguity of physical data or keys is important to the speed of table scans or key-index scans.
不再有会泄密的可疑的号码，也不会有机会让那“按重拨键”的把戏得逞。
No telltale suspicious numbers, no chance of getting caught out by the old "press redial" routine.
自然键轨道分析表明分子内与分子间超共轭和重杂化理论可以解释这些氢键的形成机制。
Natural bond orbital analysis shows that these H-bonds can be interpreted with the theory of inter-and intra-molecular hyperconjugation and rehybridization.
可那个男人的声音确实有点特别，听起来明晰有趣，非常和蔼。考虑了几分钟后我终于按下了重拨键。
And there was something special about this man's voice. He sounded sane, funny and very kind. After a few minutes 'deliberation, I pressed the redial button.
可那个男人的声音确实有点特别，听起来明晰有趣，非常和蔼。考虑了几分钟后我终于按下了重拨键。
And there was something special about this man's voice. He sounded sane, funny and very kind. After a few minutes 'deliberation, I pressed the redial button.
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