投とう資しの限げん界かい効こう率りつ

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.

• ケインズは投とう資しの限げん界かい効こう率りつという概がい念ねんを提てい唱しょうした。

  Keynes proposed the concept of the marginal efficiency of investment.

• 投とう資しの限げん界かい効こう率りつが利り子し率りつを上うわ回まわるとき、企き業ぎょうは投とう資しを増ふやす。

  When the marginal efficiency of investment exceeds the interest rate, firms increase investment.