Word · Frequency #22822
writhes
拧数;纽结正负交叉数之差
writhes is the plural of writhe.
核心释义
The number of negative crossings subtracted from the number of positive crossings in a knot.
- 1.
拧数
The number of negative crossings subtracted from the number of positive crossings in a knot
拧数;扭动;盘绕;苦恼
用法In use
The writhe of this knot is a simple integer that helps distinguish it from its mirror image.
用法提示:此处 writhe 作名词,表示纽结理论中的拧数。
To calculate the writhe, count each positive crossing as +1 and each negative crossing as −1.
用法提示:writhe 在句中作名词,指计算纽结拧数时需要使用的数值。
These two diagrams have the same writhe even though they look quite different.
用法提示:writhe 作名词,用于说明两个纽结图拥有相同的拧数。
相关词与表达Connections
搭配Collocations
- positive writhe
- 正拧数
- A right-handed trefoil knot has a positive writhe.右手三叶结具有正拧数。
- negative writhe
- 负拧数
- A left-handed trefoil knot has a negative writhe.左手三叶结具有负拧数。
- total writhe
- 总拧数
- The total writhe is calculated by adding the signs of all crossings.总拧数通过将所有交叉点的符号相加来计算。
- writhe of a knot
- 纽结的拧数
- The writhe of a knot is the number of positive crossings minus the number of negative crossings.纽结的拧数是正交叉数减去负交叉数。
学习提示Learner notes
记忆技巧Memory Tip
writhe 本义为“扭动”,纽结中正负交叉相抵的数目就是拧数:记住“扭动”便记住“拧数”。
语境与语域Context & Register
语域:formal 常见场景:knot theory、mathematical writing 这个词作名词时是纽结理论中的专业术语,通常出现在学术论文或数学教材中,属于正式用法,日常口语中很少使用。
发音与拼写Pronunciation & Spelling
同韵词(与 writhe /raɪð/ 押韵):blithe、lithe、scythe、tithe 都读 /aɪð/,且拼写均以 -the 结尾。形近词:write /raɪt/ 和 wreath /riːθ/ 虽以 wr- 开头,但发音不同——write 的结尾是 /t/,wreath 的元音是 /iː/ 且结尾是清音 /θ/,均不与 writhe 押韵,注意区分。
用法优先级Usage priority
Collins 词频等级为 1,建议结合例句记忆,而不是只背中文释义。
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.