overhead line造句怎么写

That makes installing subsurface cables 12 to 17 times as pricey as overhead lines, according to National Grid (they also need replacing sooner).

Shackle insulators for high voltage overhead lines

Insulators and fittings for overhead lines. Metal fittings. Galvanized square tubes (TG).

Pin insulators of ceramic material for high voltage overhead lines--Dimensions and characteristics

The overhead line of HVDC power transmission system needs positive and negative leads only, allowing for high power, low loss and long distance power transmission;

Insulators and fittings for overhead lines. Metal fittings. Sealing arm (BS).

Insulators and fittings for overhead lines. Metal fittings. Twining and bracing rods (TG).

The paper describes the basic switching impulse test results of phase-to-phase insulation in EHV substations and overhead lines.