等式

The equation of a straight line is y = mx + b.
直线的方程为y=mx+b。
The equilibrium equation for a chemical reaction is A + B → C + D.
化学反应的平衡方程式是A+B→C+D。
In physics, F = ma is the fundamental force equation.
在物理学中，力的基出方程是F=ma。
We need to solve this algebraic equation to find the value of x.
我们需要解这个代数方程来找出x的值。
The Pythagorean theorem states that in a right-angled triangle, a² + b² = c².
勾股定理指出，在直角三角形中，a² + b² = c²。
Newton's second law of motion can be expressed as F = ma.
牛顿第二运动定律可以表示为F=ma。
The economic model relies on several key equations.
经济模型依赖于几个关键方程式。
The Schrödinger equation describes how a quantum system changes over time.
薛定谔方程描述了量子系统随时间如何变化。
The heat transfer equation helps us calculate the rate of heat loss through a surface.
热传递方程帮助我们计算表面热损失率。
The equation for calculating the area of a circle is πr².
计算圆面积的公式是πr²。