Our MSc in Restorative Dental Practice is a renowned and highly-respected programme. It has been running for over 26 years. In a relaxed atmosphere designed to facilitate small peer group learning, ...

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[导读]目前从低频到几百 Mhz 的正弦波、三角波产生，绝大多数都使用了 DDS 芯片。 直接数字频率合成技术 (Direct Digital Synthesis)，简称 DDS，它是一种基于数字电子电路的频率合成技术，用于产生周期性波形。通常应用在一些频率激励 / 波形发生、频率相位调谐和 ...