matériau absorbant les ondes radars
/mateʁjˈo absɔʁbˈɑ̃ le-z ˈɔ̃d ʁadˈaʁ/
n
English: radar-absorbent material · 雷达吸波材料
Sens：Material that absorbs radar waves before they strike any metal part of the aircraft in order to muffle the sound of the echo.