A rheumatoid factor (RF) test is a blood test that can help diagnose rheumatoid arthritis (RA). The test measures the amount of rheumatoid factor in your blood. Rheumatoid factor is an autoantibody ...

射频简称RF，是高频交流变化电磁波的简称。 电磁波其实就是比较熟悉的概念了。 依据麦克斯韦的电磁场理论：振荡的电场产生振荡的磁场，振荡的磁场产生振荡的电场。 电磁场在空间内不断向外传播，形成了电磁波。 下图可以大致体现体现这个过程 ...

Canon has announced the RF 70-200mm F2.8 L IS USM Z, a telephoto zoom lens aimed at professional photographers and videographers, and designed to work with both EOS and Cinema EOS cameras. Recent ...

Canon RF24-105mm F2.8 L is USM Z Standard Zoom Lens, Mirrorless, Full-Frame Coverage, Close-Focusing, Outstanding Handling, for Events, Photojournalism, Portraiture, Studio Work & Video Creation ...

A foundational course, Basic RF Electronic Electromagnetic Warfare Concepts, provides an understanding of the principles and operation of electromagnetic warfare (EW) systems used by today’s military.

Trace Clearance Generator: Generate a copper pour keepout for a selected trace.

ADI’s FMCW radar solutions leverage an unparalleled level of industry expertise as well as market-leading RF and microwave capabilities to help drive radar system designs. Applications demanding ...