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Can be transmitted from person to person. The virus is believed to be transmitted mainly from person to person. Between people in close contact (about 2m). Respiratory droplets produced by an infected person when they cough, sneeze or talk. These drops of water can fall into the mouth or nose of ...

Introduction of Vacuum circuit breaker “Vacuum Circuit Breaker” gets its name because its arc extinguishing medium and the insulation medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operat...