Step drill bit
01
阶梯钻头, 台阶钻头
a specialized drill bit with multiple stepped diameters, allowing for the gradual enlargement of holes and the creation of various hole sizes with a single bit
例子
He used a step drill bit to create perfectly sized holes for the electrical fittings.
他使用阶梯钻头为电气配件创建了尺寸完美的孔。
The technician preferred the step drill bit for drilling through thin plastic sheets because it was faster and more efficient.
技术员更喜欢用阶梯钻头在薄塑料板上钻孔，因为它更快、更高效。
