ISS SPG design scheme是什麼意思?

ISS SPG design scheme是什麼意思?

取自下文..
In the ISS SPG design scheme, the electrical potential at the load power return may be several volts higher than the ground plane due to voltage drop in the long wires between power source and loads.
更新: International Space Station (ISS)
single-point-ground (SPG)
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