Part 9 of this series covered how to combine internal and external Radio Frequency Identification (RFID) Web services into a composite application in the originating SOA.

本系列的第9部分讨论了如何将内部和外部射频识别(Radio Frequency Identification, RFID) Web服务组合为原始soa中的组合应用程序。

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The active filter acts as an infinite impedance to the external for the fundamental frequency and as a low resistor for harmonic frequencies.

对外电路而言，在基波频率下有源滤波器被控制为无限大阻抗，在谐波频率下被控制为小电阻。

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When disconnected with external power grid due to certain fault, it will result in frequency collapse, and even leads to large-scale blackout owing to the active power imbalance.

当故障导致供电系统与外电网断开后，此时供电系统因有功不平衡，将出现频率崩溃现象，导致大面积停电事故。

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The system also scores the amount of time you are investing in external relationships, based on the frequency of emails, and whether there is reciprocation in those relationships, judged by how long you wait for responses, and if they arrive.

FORBES: How A Very Familiar Technology Got a New Lease of Life

The engineers found a way to kick-start a radio-frequency device wirelessly using an external power source initially, but running the device afterward on the output of power generated by the inner ear.

WSJ: Harnessing Energy From the Body to Power Devices