The phenomenon of space Charge Accumulation (SGA) of spacecraft will exhibit if it operates at its orbit-especially at high altitude orbit.

航天器表面在轨道运行中会出现电荷积累现象，尤其高轨道航天器这种现象更为严重。

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So it is important to realize the property of electric charge accumulation on its surface in space environment.

因而它们在空间电环境条件中的表面电荷积累性质受到极大注意。

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