Mohorovičić discontinuity
Initialism of to whom it may concern.
Obsolete form of vizier.
Alternative form of set at nought
(geology) The boundary between the Earth’s crust and mantle. / (astrogeology, planetology) A similar structure on other bodies, that separates crust from mantle.
地震学者たちは深部探査の際、地殻とマントルの境界で波速が急変するのを観測しました。
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