| 单词 |
perviousness |
| 释义 |
ˈperviousness [f. prec. + -ness.] The quality of being pervious; penetrability.
1669Holder Elem. Speech 78 The Italians..make the Occluse Appulse, especially the Gingival, softer than we do, giving a little of perviousness. 1672Boyle Disc. Perviousness Glass Exp. iii, The perviousness we above observed in glass. 1871Tyndall Fragm. Sc. (1879) I. iii. 88 On account of its extreme perviousness to the visible rays. 1882― in Longman's Mag. I. 39 The very meaning of transparency is perviousness to the luminous rays. |

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