纸管长度控制随意调整。本机最大的特点是：卷管后自动精切。

The length of the paper tube can be adjusted freely. The most remakable feature of this machine is automatic finish cutting after reel pipe.

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通过对背景误差方差、特征长度的调整，显著改善了背景误差功率谱的分布特点，使得NMC方法结果与更新矢量方法结果更为吻合。

After the tuning of background error variance and de-correlation length, results from the NMC-method are closer to those of the innovation vector method, and the analysis results are improved.

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