单词 | order |
释义 | order 1 The number of times a variable is differentiated. dy/dx represents a first-order derivative, d2y/dx2 a second-order derivative, etc. In a differential equation the order of the highest derivative is the order of the equation. d2y/dx2 + 2dy/dx = 0 is a second-order equation of the first degree. See also degree.2(in physics) A category of phase transition. |
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