汉娜写的字用力很重，都印透到纸的背面了。

Hanna had been pressing hard on the pen; the letters went through to the other side.

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分析了印刷透印产生的原因，并提出了具体的控制措施。

The cause of print through was analyzed and the controlling measure was proposed.

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首次提出了使用色度检测法作为印刷透印的检测评价方法，具有实际推广应用价值。

The method of detection and evaluation used chromaticity detection to print through, with practical extending application value, was first put forward.

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