isochasm

极光等频线

词形变化

isochasms 复数 isochasms

释义与例句

n.
  1. 1.

    A line connecting places on the Earth's surface that have the same mean frequency of auroras.

词源

From iso- + Ancient Greek χάσμα (khásma, “abyss, chasm”). See chasma.

来源：wiktionary