Stroke using electronic circuit control, convenient adjustment with cutting knife discretion and trace regulator, the most accurate.

冲程采用电子电路控制，随裁刀高低调整方便，并具有微量调整器，最精确。

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The online variable step can also regulate the voltage convergence rate, and the phase-locked control circuit is designed to synchronously trace frequency and phase of power grid automatically.

在线调节步长改变电压收敛速度，设计锁相控制电路，自动同步跟踪电网频率和相位。

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It can be obtained the trace to the source of large direct current with self-balancing DC comparator through self-calibration circuit, addition circuit, compare circuit and multiplication circuit etc.

介绍了用自平衡比较仪通过自校、加法、比较和乘法等校准线路实现直流大电流量值的绝对溯源。

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"We've had considerable success in the past using closed-circuit television footage in order to trace the movements of the people involved, " he said.

CNN: Investigators pick through London carnage