The measuring system consists of a pulse amplifier, a rectifier, an integrator, and a pulse counter.
自光电倍增管而下测量系统由脉冲放大、整流、积分和计数器等组成。
R2, R3, and C2 form an integrator, which produces an output voltage proportional to the pulse width of the input signal.
R2的，R3的，和C2形成一个集成，产生一个输出电压成正比的脉冲宽度的输入信号。
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