中和阴极灯丝电源的正极接地，使得整个中和阴极灯丝处于负电位；
Anode of power supply for neutralization cathode filament is connected to ground, so that filament is at negative potential.
由锌正极汞阴极氢氧化钾电解液组成的电池。
The potassium hydroxide electrolyte is forced into the cells just before use.
由锌正极汞阴极氢氧化钾电解液组成的电池。
The potassium hydroxide electrolyte is forced into the cells just before use.
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