智能超表面，全称为可重构智能表面（Reconfigurable Intelligent Surface，以下简称RIS）。 这是一种全新的无线通信增强技术，融合了人工电磁超材料和 ...

When you purchase and download books from the Kindle Store, they arrive on your device without you having to give the file format a second thought. That's because all Kindle Store purchases are ...