true error

If you forget an equal sign it'll throw a parse error instead of just evaluating true and executing the statement.

如果你忘记了等号，它会出现一个解析错误而不是判断为真或者停止声明。

ERROR-the deviation ( difference or ratio ) of a measurement from its true value.

误差(ERROR) - 与被测量值的真值相比测量的偏差 ( 差值或比值 ).

Then, the position error estimates obtained at alliterations are summed as the estimates of the true position errors.

最后把每次迭代所得的位置误差估计值取和作为真实位置误差的估计值。

If any assertion does not evaluate to true, or if any exceptions are thrown as a part of processing, unittest will report it as a test failure or error.

如果任何assert的求值结果不是真，或是在执行过程中抛出任何异常，unittest就会报告一次测试失败或错误。

Free from error or fault; true or accurate. Divortium bona gratia

正确的，无误的无错误的，无过失的；真正的，确切的

When the true model error is need to be estimated, NPF is the only choice.

当需要估计真实模型误差时，只能用NPF。