The method to determine the real specific gravity of atmospheric dust by using laser slitdiffraction technology has high precision and is easy to handle.
利用激光单缝衍射技术测量大气飘尘的真比重，具有精度高和测试方法简便易行的特点。
The paper introduces the calculation method of the associative dimension for high-precision gravity field. The trial computation results of models and real data are also given.
文章介绍了高精度重力场关联维的计算方法，并给出了模型与实际资料的试算结果。
On the other hand, the precision gravity model is important guarantees for obtaining high precision orbiting results using the dynamic or reduced-dynamic orbit determination method.
低轨重力卫星轨道的精确确定是获得精密地球重力场模型的前提，而精密重力场模型又是获得高精度定轨结果的保证。
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