The biggest difficulties in gravimetric observations are to get a first class map and the exact location of every measurement.
重力测量中最大的困难就是取得高精度的地形图以及确定每一测点的精确位置。
The biggest difficulties in gravimetric observations are to get a first class map and the exact location of every measurement.
重力测量中最大的困难就是取得高精度的地形图以及确定每一测点的精确位置。
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