nabla

纳布拉琴, 劈形算符(数学符号), 微分算符[子]

词形变化

nablas 复数 nablas

别名

nevel

释义与例句

n.
  1. 1.

    A Hebrew stringed instrument.

  2. 2.

    The symbol ∇, used to denote the gradient operator.

    数学

词源

From Latin nabla, from Ancient Greek νάβλα (nábla, “Phoenician harp”), from ancient Hebrew נֵבֶל (nḗḇel) or a Phoenician cognate. Doublet of nebel, which comes via the modern Hebrew נֵ֤בֶל.

来源：wiktionary