| 释义 |
Alexanderson Ernst Frederick Werner Al·ex·an·der·son A0192300 (ăl′ĭg-zăn′dər-sən), Ernst Frederick Werner 1878-1975. Swedish-born American electrical engineer and inventor who pioneered both radio and television broadcasting technologies.Al·ex·an·der·son (ăl′ĭg-zăn′dər-sən), Ernst Frederick Werner 1878-1975. Swedish-born American electrical engineer and inventor who developed the first practical television system (1930) and color television (1955). |