whiten
vt. 使白, 漂白 vi. 变白
发音
词形变化
释义与例句
-
1.
(To cause) to become white or whiter; to bleach or blanch.
Age had whitened his hair.
The trees in spring whiten with blossoms.
-
2.
To increase the security of an iterated block cipher by steps that combine the data with portions of the key.
计算机 工程 数学 -
3.
To normalize data so that the covariance matrix becomes the identity matrix; i.e., to remove correlations so each variable has unit variance.
数学
词汇关系
词源
From Middle English whitenen, whitnen, from Old Norse hvítna (“to whiten”), from Proto-Germanic *hwītnōną (“to whiten, become white”), from Proto-Indo-European *kwind-, *kwint- (“bright”), equivalent to white + -en. Cognate with Icelandic hvítna (“to whiten”), Swedish vitna, hvitna (“to whiten”), Danish hvidne (“to whiten”). Compare Old English hwītian (“to whiten, become white, be white, make white”).
来源：wiktionary