Low frequency words 低频词 ; 词汇
However,those possible words that can become actual words are not used very often,i. e. low-frequency words.
研究发现,一般能够转变成实际词汇的词经常都是实际中使用频率比较低的词,即低频词。
参考来源 - 低频词在英语词汇构成中的能产性·2,447,543篇论文数据，部分数据来源于NoteExpress
Then there's everything else: the low-frequency words that are rarely used except in very specific situations: overpass, far-fetched, competency, proscribe, etc.
然后是其他剩下来的：除了特定情况否则极少用到的低使用率单字，例如高架桥、牵强的、资格、丧失公权……等。
Aiming at the problem of trending to the low-frequency words existing in original mutual information method, we present an improved attribute-choosing algorithm of mi.
针对原有互信息属性选择存在的偏向于低频词的问题，提出了一种改进的基于互信息的军用信息属性选择算法。
The use frequency of the character yin appears very low in common speech and only appears as morpheme in the words.
“引”在现代汉语普通话里使用频率很低，而且只作为语素出现在词语里。
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