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单词 nut
释义 nut
[nǝt]
BOTANY
1. A fruit which has at maturity a hard, dry shell enclosing a kernel consisting of an embryo and nutritive tissue.
2. An indehiscent, one-celled, one-seeded, hard fruit derived from a single, simple, or compound ovary.
DESIGN ENGINEERING
An internally threaded fasterner for bolts and screws.
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