中ちゅう央おう構こう造ぞう線せん

noun

Median Tectonic Line

A major geological fault line in Japan, often abbreviated as MTL. Used in academic and news contexts.

• 中ちゅう央おう構こう造ぞう線せんは、西せい南なん日本にほんを縦じゅう断だんする大だい断だん層