countersink bit 详细解释

countersink bit

埋头钻

词形变化

动词过去式: countersunk | 动词过去分词: countersunk | 动词现在分词: countersinking | 动词第三人称单数: countersinks |

英英释义

名词 countersink bit:

a bit for enlarging the upper part of a hole

同义词:counterbore, countersink