闭合差指某个量的观测结果与其应有值之间的差值，在某几个量构成几何或物理条件方程的情况下，由于这些量的观测值中包含有误差，它们不能满足方程而产生一定的差值，称此差值为条件闭合差，简称闭合差。
... check line function in manual closing logic 手动合闸后加速保护 discrepancy in closing 闭合差 drenching grease in closing 合绳淋油 ...
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条件闭合差（error of closure）又称闭合差。在某几个量构成几何或物理条件的情况下，观测值构成的条件与其理论值构成的条件之差。
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三角形闭合差 closure error of triangle ; triangle closing error ; triangle error of closure ; error of closure of triangle
方位角闭合差 azimuth closure ; error of closure in azimuth ; azimuth error of closure
坐标增值闭合差 closing error in coordinate increment
绝对闭合差 absolute misclosure ; absolute closing error
角度闭合差 angle closing error ; [测] angular error of closure ; angular closure ; error of closure of angles
水平闭合差 horizon closure
三角闭合差 closure error of triangle
环线闭合差 circuit error ; loop closure ; loop error of closure
The Trimble Geomatics Office(TGO)software which is used for GPS data processing is widely used by the measurer. While in software,to check the loop closure is expressed by the horizontal and vertical components separately.
美国Trimble Geomatics Office(TGO)GPS数据处理软件被测绘工作者广泛使用,但因其对环闭合差的检核是用水平分量和垂直分量表达,不能按我国GPS规范,分别对同步环及异步环以三维坐标分量方式检验环闭合差,而给使用带来极大不便。
参考来源 - 基于TGO软件的GPS网同步环及异步环提取·2,447,543篇论文数据，部分数据来源于NoteExpress
但是闭合差校正往往是一个多解问题。
However, mis tie correction is usually a multi-solution problem.
结果表明各项闭合差与精度指标均优于规范规定，可以满足地铁施工要求。
It is concluded that all closed differences and accuracy indexes have merits than regulations, therefore it can satisfy the requirements in railway construction.
多分辨分析方法与经典闭合差校正具有不足之处相同，但前者自动化程度较后者要高。
The multi resolution method has the same shortcoming as the classical method but has higher automatic degree than the latter.
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