noun
fixed proportion; constant ratio
Technical term used in mathematics, science, and economics to describe a relationship where two quantities maintain a constant ratio.
この実験では、薬品を定比例で混合する必要がある。
In this experiment, the chemicals must be mixed in a fixed proportion.
需要と供給の間に定比例の関係が成り立つと仮定する。
Assume that a constant ratio holds between supply and demand.