As the application techniques of the internet and CD have been developing at an extremely fast speed, the information carrier has been unceasingly updating, and the CD has also been gradually upgrading to an advanced phaes.
As the application techniques of the internet and CD have been developing at an extremely fast speed, the information carrier has been unceasingly updating, and the CD has also been gradually upgrading to an advanced phaes.
随着互联网和光盘技术的飞速发展，信息载体不断更新，光盘也逐步以低级转入高级时期。