...高速光驱在设计上采用了一些新技术，诸如：智能动态速度调整（SPEED ON DEMAND）技术，恒定角速度（CONSTANT ANGULAR VELOCITY）技术，该技术与传统的恒定线速度（CONSTANT LINEAR VELOCITY）技术相配合，既减轻了电机的负荷，又改善了光驱的寻道及读盘性能。
This paper is to display existence and its conditions to a surface acoustic wave propogating along surface of a half-body of piezoelectric ceramics with a rotation of constantangularvelocity.