In the A, B, C, D and F grading system, the first four letters are typically considered passing grades.

在 A、B、C、D 和 F 评分体系中，前四个字母通常被认为是及格。

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Figure 3: Performance TAB shows you a letter grade (a, b, c, d, f) and a percent grade (1-100).

图3：性能标签使用字母(A, B, C, D, F)表示等级以及当前等级(1 - 100)。

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CrashMetrics ticks all the important boxes: a accuracy, b correct level of mathematics, c understandability, d robustness, e flexibility, f ease of use.

CrashMetrics符合下列一切要求：a准确，b正确的量化程度，c易理解，d稳定，e灵活，f易用。

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