Synonyme wurden verwendet für:
ELEKTRISCHE LEITUNG
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keywords:("ELEKTRISCHE LEITUNG")
Use of helicopters for inspection of overhead lines
Over-turning tests on foundations for railway electrification poles on sand
Transmission-line construction by helicopter
Electric welding applied to construction of transmission lines and railroad electrification
New techniques speed construction of 500-Kv line
Helicopter reduces transmission construction time 50%
Driving of deep grounds speeded by new method
Use of helicopter for inspection of transmission network of Electricite de France
Puerto Rico builds 115-Kv lines with helicopter
Helicopter patrols transmission lines effectively, economically
Light towers and helicopter speed 91 miles of 138 kv