| 1. | In the following decades , short superconducting cables were built and tested to carry alternating current ( ac ) in brookhaven , n . y . , and near graz , austria , with the latter operating connected to the local grid for several years
接下来的几十年，有人做出较短的超导电缆，在纽约布鲁克海文和奥地利格拉茨附近测试输送交流电，在奥地利还连接当地的电力网，运作了好几年。 |
