Ultrasonic is applied in slider lapping. Experiment show that material removal rate and the roughness of surface are improved. The pole tip recession (PTR) is reduced.是什么意思_Ultrasonic is applied in slider lapping. Experiment show that material removal rate and the roughness of surface are improved. The pole tip recession (PTR) is reduced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句