El diccionario de telecomunicaciones inglés-ruso

• Contains about 34,000 terms related to:
• - modern means of communication,
• - alarm systems,
• - automation,
• - radio electronics,
• - electro acoustics,
• - computer hardware,
• - and applied mathematics.

HFD

сокр. от high-frequency diffraction

высокочастотная дифракция, ВЧ-дифракция