The systematic errors which exists in the measured data are revealed in this paper, and the non-accuracy of the medium error index dealing with directions are pointed out.

本文提出了经纬仪在测量数据中所存在的系统误差，从而指出了采用方向中误差指标的不确切性。

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The optical information storage medium addresses the case where the nominal recording speed is not satisfied due to errors occurring during the manufacture of the storage medium.

该光学信息存储介质针对标称记录速度由于在存储介质的制造期间产生的错误导致不被满足的情况。

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The important cause that ECMWF medium-term numerical forecast made errors in 1998 is that astronomical tide is not included in the model.

不考虑天文潮汐可能是1998年欧洲中期数值预报产生较大误差的重要原因。

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But medium today is not what medium used to be, and because of that people really make a lot of errors in understanding how much a portion is.

但现在的中包薯条和过去的大小不同,因为这,人们理解什么是每日摄入量时,就犯了很多错误

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