The criteria of validity check are presented simultaneously.

同时提出块体搜索正确性检验标准。

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It includes element validity check, element quality check and element size check.

单元检查包括单元合法条件的检查，单元质量条件检查和单元尺寸检查。

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The validity check of zero-sequence operating direction for transformer directional over-current protection is also essential.

另外还需要进行变压器零序方向过电流保护动作方向正确性的检查。

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Most printers look for a firmware update every time they receive a job but, for some reason, they rarely check the validity of an incoming file.

ENGADGET: Researchers expose printer vulnerability, turn LaserJets into literal time bombs (update)

They forward spurious data to others before taking a moment to reflect on its worth or check its validity - the equivalent of passing on some scuttlebutt by word of mouth, but this time to thousands across the world.

CNN: BELIEVE IT OR NET

This workaround relies on the fact that Microsoft is currently offering, for a time limited period, free upgrades for the Media Center add-on, and it is this process that is flawed because Microsoft does not check the validity of the original key used to activate the copy of Windows 8 Pro before dishing out another key.

FORBES: Microsoft Blunder Gives Pirates Free Copies Of Windows 8 Pro