For testing purposes, uncomment the sample printingline in Listing 7 to show the keystroke signature before encryption.
出于测试目的，将清单7中的样例输出行取消注释以在加密之前显示击键签名。
2
Shaftless driver is an advanced transmission mode, which can solve the problem of synchrony in the high-precision printingline.
无轴传动是目前比较先进的、可以解决高精度印刷同步性的一种新的传动方式。
3
The copper foil board base paper is the fundamental material to product the paper of printingline board, and also is a kind of higher degree special industrial paper.