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round head /ˈɹaʊnd ˈbɹʌʃ/ n

中文：圆头

中文 · 圆头Español · tornillo de cabeza redondaFrançais · tête ronde
Meaning：Slotted rounded head whose base is flat so that it presses against the wood or metal surface.
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Screw head types Nail head example

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