This paper deduces the errors sources from the process of ultrasonic longitudinal wave testing and evaluates its uncertainty.
本文分析了超声波探伤纵波检测的误差来源，评定了在探伤过程中的不确定度。
We have over 100 metadata sources, and this is why we have so many errors: if you have only one source of truth, you never have any doubt.
我们有超过100个信息源，这就是为什么我们有这么多错误。如果你只有一个信息源可以信任，你就决不会产生怀疑。
The example above illustrates two sources of errors.
上面的例子展示了两种错误来源。
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