Frequency tracking circuit is one of the special circuits used in the ultrasonic generator.

频率跟踪电路是超声波发生器中的一种特殊电路。

youdao

The controlling loop includes start-up circuit, frequency tracking circuit, driving signal circuit, and water lack protecting circuit.

控制回路由启动、频率跟踪、驱动信号、缺水保护电路组成。

youdao

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

CarMax, the used-car dealer owned by Circuit City, the consumer electronics chain, has a tracking stock.

FORBES: Trick or Track?