noun🔗Share沉头孔，埋头孔。 A cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface."The carpenter used a countersink to make sure the screw head was level with the surface of the wooden tabletop. "木匠用沉头孔钻头打了一个沉头孔，确保螺丝头和木制桌面齐平。technicalmachinestructurebuildingindustrypartChat with AIVocabulary GamePractice Reading
verb🔗Share沉头，埋头 To create such a conical recess."to countersink a hole for a screw"把螺丝孔沉头technicalmachinebuildingChat with AIVocabulary GamePractice Reading
verb🔗Share沉头，埋头 To cause to sink even with or below the surface."to countersink a screw or bolt into woodwork"将螺丝或螺栓沉头埋入木料中technicalmachineindustryChat with AIVocabulary GamePractice Reading
