Development and Research of a Portable and Intelligent Whole-Machine Balancing Instrument of Dual Rotor System with Little Rotation Speed Difference是什么意思_Development and Research of a Portable and Intelligent Whole-Machine Balancing Instrument of Dual Rotor System with Little Rotation Speed Difference在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句