Vicky: Open the door and check that there's paper in the A3 paper tray.
维琪：打开那扇门，看看A 3纸张盘有没有纸。
A. I'm trying to change the paper size from A4 to A3 before I print out, but I can't seem to get into that screen.
我想打印前把打印纸尺寸由A4改成A3，可我不知道怎么进入那个界面。
This paper mainly deals with the relationship between negative bias of substrate and component phases of magnetron-sputtering ion plated aluminium film of A3 steel.
本文主要论述基板负偏压与A 3钢基体磁控溅射离子镀铝膜相组成的关系。
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