It requires no external power sources, thereby reducing operation costs.

无需额外动力，节省运行成本。

youdao

This also means that there is no external power that produces the arising and the cessation of dukkha.

这也意味着没有外面的力量来产生或终止苦难。

youdao

In the case of a mechanical switch, this circuit would require no external power to implement this function.

在机械开关的情况下，电路不需要外部电源实现这个功能。

youdao

The WarpDrive card is bootable, has no external power requirement and installs as a single drive with no user configuration required.

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Pop it out and the device, which is shaped like a thumb drive, plugs into an HDMI port and requires no external power.

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Perfect for slipping into a laptop bag or pocket, all of Iomega's 2.5-inch portable hard drives are host powered, requiring no external power supply beyond the power provided through the USB bus on a personal computer, laptop or netbook.

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