Class Definition for Class 343 - COMMUNICATIONS: RADIO WAVE ANTENNAS

Class Definition for Class 343 - COMMUNICATIONS: RADIO WAVE ANTENNAS

瀏覽:1143
日期:2025-06-15
(1) Note. The free space may be interplanetary space, atmospheric space, the earth, or large bodies of water, and the electrical energy therein is radio wave energy covering the range between long and extremely short waves. Excluded are visible light, inf...看更多