您可以走到每台机器前手工检查核对所有这些问题，但是当机器分散在一个广阔的区域内，这样做会是一个非常费时的过程。

You could go to each machine and manually check all of these issues, but when the machines are dispersed over a wide area, this can be a very time-consuming process.

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如果确须打样，我们的qx必须在机器调试时到印刷机跟前，在印刷前核对打样。

If we really need to see them, our QX should go to the printing press when the machine is being set up and check the proofs just before printing starts.

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