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单词 screw-stem
释义

> as lemmas

screw-stem
screw-stem n. (a) the part of a screw between its head and its point (now rare); (b) any plant of the North American genus Bartonia (family Gentianaceae), the members of which have slender, often twisted stems, scale-like leaves, and panicles or racemes of small whitish flowers.
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the world > plants > particular plants > plants and herbs > non-British plants or herbs > [noun] > North American > other plants
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1802 Jrnl. Nat. Philos., Chem., & Arts 3 221 The position of the knob Q is such, that the circumference of its screw stem is a tangent to the line XX.
1817 A. Eaton Man. Bot. 18 Bartonia, or Centaurella... Paniculata, (screw-stem) stem square.
1904 C. E. Hedge Wild Flowers Plymouth 26 Bartonia tenella. Screw Stem.
1910 R. Cobleigh Handy Farm Devices 100 Get two pulleys with screw stems, and screw on in beam over head.
2009 Jrnl. Torrey Bot. Soc. 136 543/2 Panicled screw-stem is rare in the Torrey Range.
extracted from screwn.1
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更新时间:2025/3/21 18:37:04