expression
oxygen transmission rate; OTR
Technical term used in packaging, materials science, and related fields to measure how much oxygen passes through a material over time.
このフィルムの酸素透過率は非常に低い。
The oxygen transmission rate of this film is very low.
酸素透過率を測定する装置を導入した。
We introduced a device to measure the oxygen transmission rate.
Compound of 酸素 (oxygen), 透過 (transmission, permeation), and 率 (rate).