This means of interruption soon became inadequate and special devices called circuit breakers had to be developed. The basic problem has been to control and quench or extinguish the high power arc, ...
China's research icebreaker Xuelong 2 breaks the ice to lead the way, Nov. 29, 2024. Currently on China's 41st Antarctic expedition, research icebreakers Xuelong and Xuelong 2, or Snow Dragon and ...