noun 下载 🔗分享 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. Examples : "The mechanic used a counterbore to create a recess in the metal plate, allowing the screw to sit flush with the surface. " 这位机械师用沉头钻在金属板上加工了一个凹槽，这样螺丝就能与表面齐平了。 technical machine part industry 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 沉孔刀，扩孔钻。 The tool with which a counterbore is machined. Examples : "The machinist selected the correct counterbore to enlarge the hole and recess the screw head. " 那个机械师选择了合适的沉孔刀来扩大孔洞并为螺钉头制造凹槽。 technical machine utensil work industry 与AI对话词汇游戏阅读练习
verb 下载 🔗分享 锪孔， 沉孔. To create such a cylindrical recess. Examples : "The carpenter will counterbore the hole so the screw head sits flush with the surface of the wood. " 木匠会锪孔，这样螺丝头就能与木头表面齐平。 technical machine work building 与AI对话词汇游戏阅读练习
