Printing ink was also invented in China.

油墨也是在中国发明的。

The book which I bought this morning smelled printing ink.

我今天上午买的书还散发着油墨味。

It is one of the principal ways in which printing ink dries.

是印刷油墨干燥的主要方法之一。

May PAD printing with two add ink, so get the more printing ink.

可以进行两次上墨移印一次，以便获得较多的印刷油墨。

Inkometer: An instrument for measuring the tack of printing ink. See tack.

油墨粘度计：量度印刷油墨粘度的仪器。参阅粘度。