The FCC's approved Second Memorandum Opinion and Order sets aside two unused UHF frequencies nationwide for the use of microphones and other low power auxiliary service devices.

FCC批准的第二意见与指示备忘录在全美范围内为麦克风与其他低电能辅助服务设备的应用划分了两个未使用的超高频频率。

youdao

A femtosecond laser pulse lasts on the order of a quadrillionth of a second but reaches a peak power equivalent to that of the entire power grid of North America during its short burst.

这种飞秒激光脉冲持续兆分之一秒(千万亿分之一秒)的时间，但是在其短暂的持续时间内，功率峰值可以达到北美电网功率相当的水平。

youdao

Second, in order to prevent the abuse of power from the parliament majority, constitution directly restricts the parliament power.

二是通过对议会权力的直接限制，防止议会多数滥用权力；

youdao

Fourth, the United States must be clearly able to project power in two distant theaters simultaneously in order to prevent a second adversary from taking advantage of our preoccupation with a first .

CENTERFORSECURITYPOLICY: North Korean scorecard

And second, does -- do you or does the government have the power to order a refund?

WHITEHOUSE: Press Briefing