hoppus foot

短语

词形变化

hoppus feet 复数 hoppus feet

释义与例句

n.
  1. 1.

    A unit of measurement for the volume of timber in the round, with a value equal to 1.27 cubic feet, where the cross-sectional area is taken as the square of one quarter of the circumference of the round.

词源

Named after Edward Hoppus, an 18th-century English surveyor.

来源：wiktionary