Station error in precipitation observation consists both random error and systematic error.

降水量观测误差包括随机误差和系统误差。

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An estimation method of station error in precipitation observation is given and its effect on the water resources appraisal is pointed out.

本文给出降水量观测误差的估算方法，并指出其对水资源评价结果的影响。

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Differential GPS can eliminate the common error to improve the positioning precision by a spatial correlation between the base station and the mobile station.

差分gps定位技术是通过基站与移动站之间的空间相关性，来消除公共误差部分，以提高定位精度。

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The Obama Administration is not going to build a Death Star and I do not have a problem with that but the Obama Administration is also refusing to fund a second development air-frame for the Boeing anti-ballistic missile laser battle station and that I regard as a serious policy error.

FORBES: White House Denies Petition Request To Build A Death Star

This sent him to the animal research station at Ruakura among the sheep, and there, in an unsterile theatre, he began with much trial and error to remove the pituitary glands of unborn lambs.

ECONOMIST: Mont Liggins | The