間かん隙げき比ひ

noun

void ratio

Technical term in geotechnical engineering and soil mechanics; the ratio of the volume of voids to the volume of solids in a soil sample.

• 砂すなの間かん隙げき比ひが大おおきいほど、地じ盤ばんは緩ゆるい。

  The larger the void ratio of sand, the looser the ground.