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单词 imperviousness
释义 imperviousness
[f. as prec. + -ness.]
The quality of being impervious; impenetrability.
1727in Bailey vol. II. (Hence in Johnson, etc.)1869Tyndall Notes Lect. Light §137 To a similar cause is due the whiteness and imperviousness of common salt, and of transparent bodies generally when crushed to powder.1896Duke of Argyll Philos. Belief 77 A modification of the same substance supplies imperviousness to the passage of air.
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