完全真空 (かんぜんしんくう) Japanese meaning | KotomoraMeanings
1
noun
perfect vacuum
Technical term in physics and engineering for a space entirely devoid of matter, or an ideal state with zero pressure.
論
上
、
完
全
真
空
で
は
音
は
伝
わら
ない
。
In theory, sound does not travel in a perfect vacuum.