| 2. | Nowadays , the switches which are being studied or applied , such as gas spark gap , thyratron and ignitron , etc , are of different structures , operating principles , advantages and disadvantages , and are applied in various situations and fields
目前处于试验中或者投入实际应用的开关元件很多,如火花放电间隙、闸流管、引燃管等,它们有不同的结构、原理和优缺点,应用在不同的场合和领域。 |
