The aspect ratio states the comparison of width to height and is commonly used to describe the shape of a TV or computer screen. For example, the aspect ratio of an earlier standard-definition (SD ...

时间回到2005年，DCI（数字电影倡导组织 Digital Cinema Initiatives）首次制定了数字影院系统规范（Digital Cinema System Specification），该规范定义了数字电影行业解码器规格： 2k = ...

Aspect ratio refers to the relationship between something's width and height, and is commonly used to describe computer and TV displays, camera sensors, printed and digital images, and more.

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The Sharpe ratio compares the return of an investment with its risk. It's a mathematical expression of the insight that excess returns over a period of time may signify more volatility and risk ...