2. Studies showed that HH objects were highly
ionised, and early theorists speculated that they might contain low-luminosity hot stars.
研究显示,HH天体皆高度电离化;早期理论家推测HH天体内部可能有低光度的热恒星。
3. Field circuit breaker failure causing too low arcing voltage followed by blast of
ionised air in +ES cubicle and flashover at the left extremity of AC bus bars.
导致弧压过低的磁场断路器故障是引发+ES柜空气电离和交流母排左侧末端处发生闪络的原因。