天气预报 > 其他 > 为了得到光栅常数应测量哪些量
为了得到光栅常数应测量哪些量
更新时间: 2020-09-19 00:00:00  

长度,测量距离。

在上述长度里,光栅产生的脉冲数或者正弦波的个数, 用距离除以脉冲数就是光栅的信号周期,即光栅常数。

关键词: 为了 得到 光栅 常数 测量 哪些

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