可允许用户设置边框和边距调整量、页眉和页脚以及纵向或横向打印。
You can enable users to set border and margin adjustments, headers and footers, and portrait or landscape orientation.
一定使用横向模式打印，以便能够看到整张图片。
Make sure to print it in landscape mode so that you can see the whole picture.
利用旧式针式打印机的横向走行结构，作为倒立摆的基本机械结构，设计并制作一种简单可行的低成本倒立摆实验系统。
A simple and feasible low-cost experimental system has been designed and made by using the lateral moving structure of the old-fashioned needle-type printer as the basic mechanic structure.
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