But in practical measurement, it is very difficult to make no dead time sample due to the counter's dead time.

但实际测量时由于计数器的死区时间，使得无间隙采样十分困难。

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In order to increase the measuring accuracy the sample averaging method must be introduced, so that a certain time of measurement is needed.

为了提高测量精确度，减少随机误差，对噪声峰值测量应采用统计平均方法，所以也需要一定的测量时间。

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Stereo light microscope which possesses relatively large depth of field, good performance in real-time and no breaking surface of sample, is used in stereo three-dimensional information measurement.

体视显微镜具有工作空间大、实时性高以及不损坏样品表面等优点，己用于微观对象三维立体信息的测量。

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