Calculation on the Thickness of Elastic Fluid Lubricant Film of Crossed Helical gear Transmission and Analysis on Influence of Primary Parameters是什么意思_Calculation on the Thickness of Elastic Fluid Lubricant Film of Crossed Helical gear Transmission and Analysis on Influence of Primary Parameters在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句