A flat bed or plate of metal, as the moving part which holds the work in a planer, or the flat part of a printing press, which presses the paper against the type.

刨床内可以移动之平面金属版；印刷机上之压印版。

The cylinder, or roller, of a typewriter, around which the paper is place, and against which the type strikes.

打字机上之滚筒。