expression, noun
marginal efficiency of investment
A technical term in economics, referring to the expected rate of return on an additional unit of investment. Used in academic or business contexts.
ケインズは投資の限界効率という概念を提唱した。
Keynes proposed the concept of the marginal efficiency of investment.
投資の限界効率が利子率を上回るとき、企業は投資を増やす。
When the marginal efficiency of investment exceeds the interest rate, firms increase investment.
A compound of 投資 (investment), の (possessive particle), 限界 (limit/margin), and 効率 (efficiency). The term is a direct translation of the English economic concept 'marginal efficiency of investment'.