青云翻译

1971--1974 high voltage switchgear plant in Henan Province Pingdingshan designer, the first 220kV single fracture design pressure less oil circuit breaker.

　Henan pingdingshan, 1971 – 1974 design of high voltage switch factory, the first design of 220kV single fracture surface high pressure oil-minimum breaker.

　1971--1974 the year Henan Pingdingshan high-voltage switch plant estimator, the origination designs the 220kV single fracture high pressure few oil circuit breakers.

1971 - 1974 Henan Pingdingshan high voltage switch factory designers, creative design 220 single-sedimentological kV high pressure less oil circuit breakers.

　Henan pingdingshan, 1971 – 1974 design of high voltage switch factory, the first design of 220kV single fracture surface high pressure oil-minimum breaker.