据预测，这一效应非常小，以至于超越了实践经验和地面的实验室测量手段。
This effect is expected to be so small that it is beyond practical experience and ground laboratory measurement.
为开展真空紫外辐射及真空紫外线与其它空间环境复合效应的地面模拟实验，研制了真空辐照模拟设备。
We developed the ground VUV simulation facility for the research of vacuum ultraviolet irradiation and the compound effect of vacuum ultraviolet radiation with other space environments.
同时还讨论了在地面和卫星的激光时间比对实验中由于地球自转效应的相对论改正问题，提出了一种实用计算公式。
The relativistic correction due to earth rotation for both terrestrial and satellite time comparison experiments via laser pulses has been discussed and a practical calculation formula is proposed.
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