This paper classifies the testing technologies of PCB, introduces the on-line testing and on-line tester.

本文对电路印制板的测试技术进行了分类，介绍了在线测试和在线测试仪。

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The on-line testing of hydrogen content in the molten aluminum alloy is very important for producing aluminum alloy castings of high quality.

液态铝合金含氢量现场检测对于生产高质量铝合金铸件及铸锭具有非常重要的意义。

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On one side we have the testing fanatics, who want to test every single line of code they write.

一方面，存在测试妄想狂，他们希望能测试自己写的每一行代码。

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But the NUT said candidates who needed several resits to pass the tests were dyslexic, had English as an additional language, or were less familiar with the on-line testing system.

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Changing the Treaty to eliminate its constraints on development and testing, however, sounds a lot like the sort of line-in, line-out amending process that National Security Advisor Condoleezza Rice has correctly, and repeatedly, said could not be used with the ABM Treaty.

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The weekly on-balance volume (OBV) formed a negative divergence at the highs (line h), and is testing its long-term uptrend (line i).

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