Based on analyzing common low noise and fast photodetectors, PIN photodiode is selected to detect He-Ne laser longitudinal mode pulse.
在分析常用低噪声快速光电探测器的基础上，选择pin光电二极管来探测氦氖激光纵模脉冲。
Band pass filter is adopted to remove the high -frequency switching disturbance in node voltage measurements and avoid the time delay of common low pass filter.
针对开关动态对节点电压采样值的干扰，引入带通滤波，滤除高频动态的同时避免了常规低频滤波的延时。
Q345 steel, a common low carbon alloy steel, was widely used in industries. The fracture toughness of Q345 steel is an important parameter for measuring cracks in engineering.
Q345是广泛使用的一种普通低合金钢，其断裂韧性是工程中进行裂纹检测的重要参数。
Q345 steel, a common low carbon alloy steel, was widely used in industries. The fracture toughness of Q345 steel is an important parameter for measuring cracks in engineering.
Q345是广泛使用的一种普通低合金钢，其断裂韧性是工程中进行裂纹检测的重要参数。
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