英语单词

subtend是什么意思

subtend

英 [sʌb'tend] 美 [səb'tɛnd]
  • vt. 对向;包在叶腋内

中文词源


subtend 对向弧,对向角

sub-,在下,向上,-tend,延展,词源同 tend,extend.用于几何学术语指对向弧,对向角。

英文词源


subtend (v.)
1560s, from Latin subtendere "to stretch underneath," from sub "under" (see sub-) + tendere "to stretch" (see tenet). Related: Subtended; subtending.

双语例句


1. In the daisy family the numerous bracts which subtend the inflorescence are known as an involucre.
在菊科植物中,苞片数目多而聚生在花序外围,称为总苞.

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