Although Jovian tidal effects typically promote orbital circularization over time, Io's eccentricity persists through gravitational interference from Europa and Ganymede. These three satellites maintain Laplace resonance—a gravitational configuration that prevents Io's orbit from perfect circularity. Periodic gravitational perturbations from neighboring moons subtly alter Io's trajectory, counterbalancing Jupiter's tidal damping and perpetuating thermal tidal effects across geological eras. Remarkably, Io's volcanic systems have remained operational for billions of years.
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但压花对吸水速度影响有限，2022年研究也证实不同压花图案的液体扩散速率并无明显差异。
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