上一小行星重力可以忽略不计，因此在一走动，是不是一个真正的选择。
Gravity on an asteroid is negligible, so walking around on one isn't really an option.
当比值足够大时，离心试验结果趋于稳定且与重力场试验结果之差可忽略不计。
When the ratio was large enough, the difference between the centrifugal and gravitational tests would be so small could be be ignored.
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