In the test program, we'll attach a wheel listener that has the background color loop through the array of colors based upon the direction, as shown in Listing 4.

在测试程序中，我们增加了一个鼠标滚轮侦听器，它让背景色按照某一方向在颜色数组中循环，如清单4所示。

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This will be the easiest way to do audio if you don’t require any background music (I guess you could do a nasty hack and loop a 30 sec clip but that would be shameful ).

如果你不要求任何背景音乐，这将是最容易的播放音频的方式了。

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The key problem of the loose parts monitoring system for primary loop of pressurized water reactor is how to extract loose parts impact signal from complex background noise.

压水堆一回路松动件状态监测系统的关键环节在于如何从复杂背景噪声中提取松动件冲击信号。

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My test taxes the computer more than a normal user and involves keeping Wi-Fi on, cranking the screen to full brightness, turning off all power-saving features, keeping email retrieval going in the background and playing an endless loop of music.

WSJ: A Laptop Screen That Promises an Eyeful

Loop quantum gravity is, in the jargon, background independent.

ECONOMIST: A new ��theory of everything�� is gaining ground