Of a bolt, screw, etc.: Sunk or let in so as to lie flush with the surface.
单词 | θ213046 |
释义 | society > occupation and work > equipment > building and constructing equipment > fastenings > [adjective] > screw > countersunk (1) countersunk1795 Of a bolt, screw, etc.: Sunk or let in so as to lie flush with the surface. |
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