石墨烯最早在2004年诞生于一个实验室，本质上是一层由纯碳原子组成的蜂窝状晶格层，薄到竟被认为是二维物质。

First produced in a lab back in 2004, graphene is essentially a single layer of pure carbon atoms bonded together in a honeycomb lattice so thin it's actually considered two-dimensional.

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纯碳能够呈现出不同的构造，这主要取决于碳原子的排列，以及他们之间的结合方式。

Pure carbon can make very different structures depending on how the atoms are arranged and how they bond to each other.

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这是氢的同原子的共价能,在纯氢中，我们有完美的共价键。

This is the homonuclear bond energy for hydrogen in pure hydrogen. There we have perfect covalency.

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This is the homonuclear bond energy for hydrogen in pure hydrogen. There we have perfect covalency.

这是氢的同原子的共价能,在纯氢中，我们有完美的共价键。

麻省理工公开课 - 固态化学导论课程节选