Hole saw
01
孔锯, 开孔器
a cylindrical cutting tool with teeth, used for creating larger-diameter holes in wood, plastic, or thin metal
例子
The carpenter used a hole saw to cut perfect circles in the wood for the new shelf supports.
木匠使用孔锯在木材上切割出完美的圆形，用于新的架子支撑。
To install the ventilation system, he used a hole saw to make holes in the metal ducting.
为了安装通风系统，他使用了一个孔锯在金属管道上打孔。
