算: Ⅰ动词1.(计算数目) calculate; reckon; compute; figure 短语和例子能写会算 (be) good at writing and reckoning; 算算旅行的费用 calculate the cost of a journey; 请你算一算我该付多少钱? please reckon up how much i must pay? 算出这
方程: [数学] equation 短语和例子三次方程 cubic equation; 高次方程 equation of higher degree; 线性方程 linear equation; 把方程式简化成 ... reduce the equation to ...; 物态方程 equation of state; 化学方程 chemical equation