quantity

量、数量

ある物がどれだけ、またはいくつあるか。

やさしい英語で： The amount or number of something.

• Check the quantity of rice.
• We ordered large quantities of paper.
• What quantity do you need?

使い方： quantity of something (We measured the quantity of water in the tank.)

類義語： amount, number

よく使う表現： large quantity, quantity of something

一定量、ある量

正確な大きさや数が示されていない量。

やさしい英語で： An amount of something whose exact size or number is not stated.

• We found a quantity of old wood.
• Add a small quantity of oil.
• A quantity of sand remained in the bucket.

使い方： a quantity of something (They found a quantity of old coins.)

類義語： amount

よく使う表現： a quantity, a certain quantity

量、物理量

測ったり数えたりして、数字で表せるもの。

やさしい英語で： Something that can be measured or counted and expressed as a number.

• Mass is a physical quantity.
• Each quantity must be expressed in the correct units.
• Which quantities change during the experiment?

よく使う表現： physical quantity, scalar quantity, vector quantity