The offload system then pulls the sheet from the lay table to the printer's bed and the table vacuum is engaged to draw down the sheet.
然后卸载系统就会把板材从放置台放到打印机床上，然后打印真空台就可以吸附板材。
Switch on the vacuum to draw the solution through the column (The plasmid DNA binds to the column material).
开启真空装置使液体通过管柱（质体DNA会与管柱物质结合）。
Some people speculate that one could draw on this vacuum energy for an unlimited supply.
有些人推测可以利用这种真空能量来获得无限的能量补充。
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