butterfly nut
A nut with wing-like projections to provide leverage in turning with thumb and forefinger.
(organic chemistry) A polymeric form of phosphoinositide
plural of typescript
plural of armónico
私は親指と人差し指で回してしっかり固定されるまで、手で蝶ナットを使って緩んだ蝶番のネジを締めました。
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