The reserve control panel. It has fewer buttons, lights and levers, but it is still able to make the main operations.

备用控制面板。它的按钮、显示灯和操作杆都更少，但同样能够进行主要的操作。

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The thesis discusses on how to research and then design the LED video panel system, which is a typical product of computer digital video system, by using the PLD chip as the main control logic.

本论文讨论用PLD芯片作为主要控制逻辑来设计计算机数字视频系统的一个典型应用型产品——LED视频电子显示屏系统的研制方法。

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This paper introduces the main origin of formaldehyde released from wood based panel, and corresponding control measures for reducing release of the formaldehyde are put forward for consideration.

人造板的甲醛释放问题已越来越受到人们的关注。本文介绍了人造板甲醛释放的主要来源，以及降低人造板甲醛释放的主要措施。

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Users could change their main net service provider by going to the Connections section of the Internet Options folder on the Windows Control Panel, said Mr Peacock.

BBC: AOL rejects software complaints