研究人员首先在单晶体 TiO2 平面上制作一层或两层的单分子硒化铅量子点。

The researchers began by making samples of one or two monolayers of PbSe quantum dots deposited on flat single-crystalline TiO2.

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创造出单分子宽度无热损的导电金属线意味着一种新型的电子元件可同时解决两个难题。

Width to create a single molecule without thermal damage of the conductive metal lines means that a new electronic components can simultaneously solve two problems.

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这种单分子马达据称能令马达的研究和制造更为简化。

The simplicity of using a single DNA molecule reportedly makes the nanomotor easier to manufacture and develop.

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So, in talking about covalent bonds, we should be able to still apply a more general definition of a chemical bond, which should tell us that the h 2 molecule is going to be lower in energy than if we looked at 2 separate hydrogen atom molecules.

那么，既然提到了共价键，我们应该还可以,给化学键下一个更普遍的定义,那就是告诉我们氢分子能量应该更低,与两个分开的氢的单原子分子相比。

麻省理工公开课 - 化学原理课程节选

We have either single atoms or molecules consisting of small numbers of atoms.

单原子或者分子,由很多很小的原子组成。

麻省理工公开课 - 固态化学导论课程节选