Image (IMAGE) Science China Press Caption 利用参数调制技术对相应参数外加周期性调制。A、B对应线性参数调制,C对应椭圆参数调制。 Credit ©《中国科学》杂志社 Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.