The improving method of the exchange system of the type HB 3000 Brinell tester and the operation program of the hardness tester after improvement are introduced. And the improvement effect is described.是什么意思_The improving method of the exchange system of the type HB 3000 Brinell tester and the operation program of the hardness tester after improvement are introduced. And the improvement effect is described.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句