Evaluates an expression and, when the result is false, prints a diagnostic message and aborts the program.

判断一个表达式，如果结果为假，输出诊断消息并中止程序。

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When no warning message or diagnostic message is issued, it indicates that the optimizer has applied the guideline.

如果没有出现任何警告信息或诊断消息，那么表明优化器已经成功应用了准则。

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With the data of nonlinear processing and data smoothing function, rapid automatic correction, self diagnostic message.

具有数据非线性处理及数据平滑功能，快速自动多点校正，自诊断信息提示。

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Since last September OnStar has been offering GM owners a monthly e-mail message summarizing the health of their vehicles based on 1, 600 diagnostic checks done remotely.

FORBES: Magazine Article