In addition to the stability and accuracy of satellite orbitaldata triggered decoherence is one of the reasons.
另外卫星的轨道数据的稳定性和准确性也是引发退相干的原因之一。
2
A satellite prediction calculated from orbitaldata more than a few weeks old will generally be virtually meaningless.
其实，通过轨道数据计算出来的卫星轨迹，要比通过几周前的数据计算所得更不准确。
3
Evidence for an early lunar magma ocean comes from orbitaldata showing an abundance of plagioclase, a lightweight mineral that crystallises from and floats to the top of magma.