Direct Frequency Synthesizer has been widely used in many fields.

直接频率合成器被广泛应用于众多领域。

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An optoelectronic detection system based on the optical feedback effect in a direct frequency modulated laser diode is developed.

设计并研制了一套基于光反馈效应的直接频率调制激光二极管光电探测系统。

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The acceleration response curve of resistor body midpoint can be computed by direct frequency response solution, simulation precision is testified by vibration test.

由频响求解器直接得出电阻基体中点的加速度响应曲线，其仿真精度通过振动试验给予了验证。

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The SEC has already proposed a number of changes designed to address their growing influence, including extra restrictions on broker-dealers that provide direct market access to high frequency traders, a trader tracking system for large traders, circuit breakers that would slow trading in individual stocks if they fall more than 10%, and new rules for off-exchange trading venues.

FORBES: SEC Wants Real Time Trading Data

The SEC is proposing a ban on flash trading along with other issues grabbing headlines, like direct market access for high-frequency traders.

FORBES: Birth Of A Stock Exchange

In 1999 I moved to Florida to start another hedge fund and opened a brokerage firm catering to big traders and institutions looking for direct access trading of their high frequency algorithms, which is what my funds specialized in.

FORBES: Dear Jamie Dimon, What's Really Anti-American?