Dry air is a mixture of gases, most of which is nitrogen by volume.

干燥空气是多种气体的混合，按体积计，大部分是氮气。

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Dry air is a mixture of gasses, most of which is nitrogen by volume.

干燥空气是多种气体的混合物，按体积计，大部分是氮气。

youdao

Dry air is a mixture of gasses, most of which is nitrogen by volume.

干燥空气是多种气体的混合物，按体积计，大部分是氮气。

youdao