ashless的音标：ashless的英式发音音标为：['æʃles]ashless的美式发音音标为：['æʃles]...

The development and application of ashless antiwear hydraulic fluid with high pressure are described.介绍了无灰高压抗磨液压油的研制过程及在实际应用中的情况....

无灰的...