Through the investigation, the gas trapping cavities on boiling surface are identified and a data set of the mouth diameters of gas trapping cavities is got.

通过对沸腾表面微结构进行分析，沸腾表面上具备贮藏气体条件的凹坑被识别出来，并且得到一个这些具备贮藏气体条件凹坑的开口半径的数据集合。

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Those fissures and crevices that have trapped natural gas below the Earth's surface are also capable of trapping helium, although typically in small amounts.

CNN: U.S. needs a strategy on helium