• 1. background printing: 后台打印 | 幕后列印
• 2. Orange white black background printing: 橙色底色白色黑色印刷
• 3. Quarantine manual screen printing background: 待检说明书丝印底色

• 1.Tasks such as recalculation and background printing are good examples of worker threads.
  重新计算和后台打印等任务是很好的辅助线程示例。
  dict.yoduao.com
• 2.Features and effects: Colorful background printing. The surface of the pattern has the pearl and metal color effect.
  特点和效果：多彩的底色印刷，图案表面经过珠光处理，有珠光油墨特有的珍珠银和金属金光泽，高贵典雅。
  dict.yoduao.com
• 3.While we could have defined the background color, font color, and margins, we left this to the default Settings of the printing device.
  尽管可以定义背景颜色、字体颜色和空白边，但是我们保持打印设备的默认设置。
  dict.yoduao.com

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