プログレッシブ和英中辞典(第4版)の解説
せいひれい【正比例】
((in)) direct proportion ((to))
国民の肥満と心臓病の発生率はその国の富裕の度合と正比例する
The incidence of obesity and heart disease in a country is 「directly proportional [in direct proportion] to the wealth of that country.
日本語の解説|正比例とは
((in)) direct proportion ((to))
国民の肥満と心臓病の発生率はその国の富裕の度合と正比例する
The incidence of obesity and heart disease in a country is 「directly proportional [in direct proportion] to the wealth of that country.