directrix
n. 准线 [计] 准线
发音
UK
/dɪˈɹɛk.tɹɪks/
UK
/-ˈɹek-/
UK
/daɪ̯-/
UK
/dʌɪ̯-/
CA
/dɪˈɹɛk.tɹɪks/
US
/dɪˈɹɛk.tɹɪks/
CA
/daɪ̯-/
US
/daɪ̯-/
AU
/dɪˈɹek.tɹɪks/
AU
/dɑe̯-/
NZ
/dəˈɹek.tɹəks/
NZ
/dɑe̯-/
SCOT
/dɪˈɹɛk.tɹɪks/
SCOT
/dʌi̯-/
SCOT
/dəi̯-/
IN
/ɖɪˈɾɛ(ː)k.ʈɾɪks/
IN
/ɖəj-/
IN
/ɖɑːj-/
词形变化
directrices
directrixes
复数
directrixes
directrices
复数
别名
directrice
释义与例句
n.
-
1.
Female equivalent of director.
-
2.
A line used to define a curve or surface; especially a line, the distance from which a point on a conic has a constant ratio to that from the focus.
数学
相关短语
词源
Learned borrowing from Latin dīrēctrīx. By surface analysis, direct + -trix.
来源：wiktionary