A numeric display indicates the laser's pulse period and signal strength.
数字显示表明了激光的脉冲周期和信号强度。
Modulating the ultrasonic wave, intensity and period of the light pulse will change.
调节超声波，可改变光脉冲的强度和周期。
Modulating the ultrasonic wave, intensity and period of the light pulse will change.
调节超声波，可改变光脉冲的强度和周期。
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