梯度、散度和旋度——定义及公式.docx

梯度、散度和旋度——定义及公式 Gradient, Divergence and Curl - Definitions and Formulas The Hamilton operator, denoted by ?, is a differential operator that has no meaning by itself but only when it acts on a quantity. In a three-dimensional coordinate system, it can be expressed as ? = (?/?x)i + (?/?y)j + (?/?z)