The experimental result also shows that the nitrogen element on the surface of contact black surface may be mainly in forms of amino group and nitro group.

此外，实验分析了接触法炭黑表面氮元素的组成，结果表明主要是以氨基和硝基的形式存在。

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When the antibodies on the surface of the nanotubes come in contact with a target protein, the proteins bind to the tubes and spread them apart a tiny bit.

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When these charged droplets come into contact with the surface of the print they collect any substances deposited on it, creating a thin liquid film.

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This film is form-fitted onto an audio device and creates wide area surface contact with the skin, or the inside of the ear canal.

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