compression

データ圧縮

コンピューターのファイルが使う保存容量を減らすこと。

やさしい英語で： The process of making computer files use less storage space.

• Compression makes the file smaller.
• Too much image compression can reduce picture quality.
• Does this software support video compression?

類義語： data reduction

よく使う表現： data compression, file compression, image compression

圧縮

圧力をかけて、ものが占める空間を小さくすること。

やさしい英語で： The process of pressing something into a smaller space.

• The foam changes shape under compression.
• Compression of air produces heat.
• This material returns to its original shape after compression.

使い方： compression of something (Compression of the gas raises its temperature.)

類義語： compaction, squeezing

反対語： expansion

よく使う表現： compression of something, under compression, air compression

圧縮行程

エンジンが燃料と空気の混合物を、燃やす前に圧縮する段階。

やさしい英語で： The stage when an engine squeezes its fuel and air mixture before burning it.

• Both valves close during compression.
• The piston moves upward on the compression stroke.
• Compression prepares the fuel mixture for burning.

よく使う表現： compression stroke, during compression, engine compression