a unit used to measure the activity of many vitamins, hormones, enzymes, and drugs. an international unit is the amount of a substance that has a certain biological effect. for each substance there is an international agreement on the biological effect that is expected for 1 international unit. also called iu.
国際単位の基準
The diplomatic relations are strained―in a high state of tension.
an international unit of measure that equals one trillionth part of something, called pico
The diplomatic relations are strained―in a high state of tension.
an issue with impact world-wide, called international problem
国際親善.