To overcome disadvantages of the circuits, an improved one is proposed, which consisted of diode full-rectifying-bridge and single-switch PFC circuit.

针对这些电路的优缺点及存在的问题，提出新的二极管全桥整流配合单开关PF C电路方案。

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Their clusters are set up as a set of nodes with a single core switch.

他们的集群是由一系列节点和一个单一核心的交换机组成的。

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Other alternative input devices include single switch devices, devices that track head movements, and alternative keyboards for persons with mobility impairments.

其它可选择的设备包括单一切换设备、跟踪头部移动的设备，和用于行动困难的人可选择的键盘。

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But the fact is, we don't know what they're getting at, and while we don't appreciate this kind of vagueness, it's not too late for them to make the 360 a single switch-tripping light-up cable kind of system, otherwise totally wireless.

ENGADGET: Exactly how wireless is the Xbox 2/360 going to get?

Doubling your screen real estate is a great way of getting the most out of the information that your computer's giving you without having to switch back and forth between pages on a smaller, single-screen setup.

CNN: How to squeeze the most from your computer

On the original Storm, SurePress consisted of a single mechanical switch mounted below the center of the display, leading to wobbly, uneasy clicks and -- far more devastatingly -- an inability to actuate more than one screen element at a time, which made the keyboard more of a hassle to use than it should've been.

ENGADGET: BlackBerry Storm2 hands-on and impressions Hands-on