Roberval balance

短语

[网络] 随意平衡秤

词形变化

Roberval balances 复数 Roberval balances

别名

Roberval's balance

释义与例句

n.
  1. 1.

    A kind of weighing scale with two identical horizontal beams attached, one directly above the other, to a vertical column.

词源

Presented to the French Academy of Sciences by the French mathematician Gilles Personne de Roberval in 1669.

来源：wiktionary