Mechanical calculator
01
机械计算器, 机械式计算装置
a device that performs arithmetic operations through mechanical means, often using gears, levers, and other physical mechanisms, predating electronic calculators
例子
In the museum exhibit, visitors could try their hand at using a mechanical calculator to add and subtract numbers.
在博物馆展览中，参观者可以尝试使用机械计算器来加减数字。
