Based on the measured voltage gain-frequency response characteristics, a practical approach for model parameters measurement of piezoelectric transformer was proposed in this paper.

本文基于实测压电变压器电压增益-频率响应特性，提出了一种实用的压电变压器模型参数的求解方法。

youdao

In the DOJ's opinion, an incumbent carrier would need to demonstrate both compelling evidence of capacity constraints and an efficient use of its current licenses in order to gain additional lower frequency spectrum.

ENGADGET

Regulators are looking into whether exchanges, in a rush to gain the business of high-frequency firms, have provided advantages to some sophisticated trading firms that allow them to trade profitably at the expense of other investors, according to people familiar with the continuing probes.

WSJ: High-Speed Trading in the Spotlight