Anode of power supply for neutralization cathode filament is connected to ground, so that filament is at negative potential.
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；
We take polypropylene fiber as the raw material and the polypropylene filament or polypropylene yarn as ground cloth.
采用聚丙烯纤维为原料，丙纶长丝或丙纶纱为其布。
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