Physics. Of a vacuum: containing very little air or gas; almost complete; (of a vacuum tube or thermionic valve) containing such a vacuum; chiefly in…
单词 | θ75262 |
释义 | the world > matter > gas > air > [adjective] > under pressure > in which a vacuum has been produced > complete or incomplete vacuum (2) hard1898 Physics. Of a vacuum: containing very little air or gas; almost complete; (of a vacuum tube or thermionic valve) containing such a vacuum; chiefly in… rough1900 Designating a vacuum of the lowest degree of evacuation. |
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