It can also modulate the laser intensity by acoustooptic effect, and control the central frequency of the device.

也可以用声光效应实现激光强度的调制，而用电光效应来控制器件的中心频率。

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The key technique of this new filter is how to achieve the extreme narrow band-pass width and a slight deviation of central frequency.

如何实现极窄的通带宽度和极小的中心频率偏差是研制中所解决的关键技术问题。

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The filter used a kind of general structure, whose central frequency located nearby the rotation speed to reduce the unbalance vibration.

该陷波滤波器采用通用式结构，其中心频率分布在转子转速附近以抑制不平衡振动。

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Another trend that he says concerned him: the central role high-frequency firms play in the trading of exchange-traded funds.

WSJ: High-Speed Trading in the Spotlight

The exact cause of the Flash Crash of May 6, 2010 will most likely never be known, but most believe the use of high frequency trading as being a central culprit (no matter what the SEC might say).

FORBES: High Frequency Trading in Congress

Initial high-frequency data for September, though, point at a recovery in EM central bank demand for the common currency.

FORBES: EM Central Banks To Gobble Up Euros After Sharp Drop Against The Dollar