ASA Exposure: Index or speed rating that denotes the film sensitivity, defined by the American National Standards Institution.

ASA曝光指数∶由美国国家标准学会规定，标明胶片对光的敏感程度的指数或感光速度。

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Some users claim that the Class 4 SD cards (4 denotes the speed class rating) are more vulnerable to problems, and that upgrading to a Class 6 card fixed that.

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The most efficient Cruze model, the Eco, uses a 138-horsepower, turbocharged, four-cylinder engine and a manual, six-speed transmission to achieve an EPA rating of 28 mpg city, 42 highway.

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All officially recognized courts have a court pace rating (CPR), which rates the "speed" of the court -- and clay courts are at the bottom.

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