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小测验：选择正确的单词
- 论坛新贴
countersink ['kauntəsiŋk]
基本释义
- vt. 钻孔装埋,打埋头孔于
n. 皿锥,埋头孔,暗钉眼
词形变化
- 时 态：coun·ter·sunk, coun·ter·sink·ing, coun·ter·sinks
英英解释
2个名词解释
- a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
- a bit for enlarging the upper part of a hole
[同] counterbore, countersink, countersink bit
1个动词解释
- insert (a nail or screw below the surface, as into a countersink)
[同] countersink, set