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
范: 名词1.[书面语] (模子) pattern; mould; matrix 短语和例子铁范 iron mould2.(模范; 榜样) model; example 短语和例子规范 model of conduct; 典范 example3.(范围) boundary; limits 短语和例子闺范 rules of propriety for ladies and marr