Here is presented the photonic crystals and their developed active devices.

本文介绍了光子晶体及根据其原理开发的光子晶体有源器件。

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The article is mainly on study of the theory and design of millimeter-wave transceiver front-end from the active devices and passive components.

毫米波器件又分为无源器件和有源器件，本文从这两个方面对毫米波收发前端的理论和设计进行了研究。

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Since WDM channels share optically active devices such as EDFAs, network management of one channel may affect the power and noise features of the other channels.

由于在WDM系统中，各个信道共用光有源器件(如edfa)，对某一信道的网络操作有可能影响其它信道的功率和噪声特性。

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It used to be a lot easier to be physically active then it is today, and we'll discuss this later in the class, but energy saving devices all over the place.

在过去,人们比现在从事更多的体力活动,这一点我们以后再讲,帮助你省力的装置,如今随处可见

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Avoiding unnecessary reimbursements requires the ability to centrally administer BYOD devices, including generating monthly reports of the active devices and automatic reconciliation of reimbursements with device and employee status.

FORBES: Developing A BYOD Strategy: The 5 Mistakes To Avoid

The malware can steal data and social-network conversations, take snapshots of computer screens, penetrate across networks, turn on a computer's microphone to record audio and scan for Bluetooth-active devices.

WSJ: Cyberattack Hits Iranian PCs

Last month, China had an estimated 220 million active smart devices in circulation versus 222 million in the United States.

FORBES: China Stripping U.S. Lead In Smart Devices Just Weeks Away