ball hardness testing machine的用法和樣例：
例句
- And the measured uncertainty in Vickers hardness testing was evaluated according to procedure without bias method and procedure with bias method.
利用無偏差估計方法和考慮硬度計偏差的方法對維氏硬度試驗中的測量不確定度進行了評定。 - The ultrasonic hardness tester is an versatile nondestructive tester.
超聲硬度計是一種普適的無損測試儀器。
