A member of the Misc package, the volume class controls the volume level on the computer.

Misc包的成员之一Volume类控制着计算机的音量。

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When you read a chapter or a volume class, it is necessary to clearly understand the basic concept of the definition of science.

当你通读某卷章或上课时，要明确理解所学基本概念的定义。

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The base package including point class, line class, area class, volume class, complex object class and relation class, is the base of the application package and the combination package.

其中基础类包是应用类包和组合类包的基础，它用点、线、面、体、复杂对象和关系类等基本的要素表示三维空间。

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What might be less obvious is that it has been asking for permission to do that since 2009, during which time total mail volume has fallen more than 5% and First-Class volume has drop by more than 12%.

FORBES: First Class Mail is Doomed. Get Over it.

Charges taken in connection to a mandate to prefund retiree health care drove the loss in the latest quarter, but declining first-class and advertising mail volume were a drag on revenue.

WSJ: Postal Service Registers $5.2 Billion Loss

It got off to a rocky start in 1998 when it launched its first high-volume sport utility, the M-Class, in a new plant in Alabama.

FORBES: Magazine Article