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单词 midvein
释义

> as lemmas

midvein
midvein n. the central vein of a leaf.
ΚΠ
1857 T. Moore Handbk. Brit. Ferns (ed. 3) 168 Venation (pinnules) consisting of a flexuous midvein.
1877 F. G. Heath Fern World 215 Along on each side of the mid veins of the lobes are alternate veinlets.
1992 M. Ingrouille Diversity & Evol. Land Plants 79 The Cycadaceae have pinnae with a single midvein.
extracted from midadj.n.1adv.2
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as lemmas
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