pound-mass

名词 n.

英文释义

名词 n.
  1. A unit of mass equal to the weight, on earth (subject to standard gravity), of a mass of one avoirdupois pound, equal to about 453.592 grams. Symbol lbm or lbₘ.
    — On the moon, however the weight of a pound-mass (lb or lbm) is only about one sixth of a pound-force (lbf).

词形变化

pounds-mass plural

词源

From pound + mass, to differentiate from the unit of weight.
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