photophone 中文意思是什麼
photophone
解釋
n. 名詞 【電訊】光線電話機；光音機。-
He called it the photophone
他把這項發明稱為光影電話。 -
Bell considered the photophone one of his most important inventions
貝爾認為光影電話是他最重要的發明之一。 -
It took a long time before the idea behind bell ' s photophone became practical
貝爾花了很多時間，才把光影電話的概念付諸實踐。 -
Alexander graham bell develops the photophone which uses sunlight to carry messages. it was never commercially produced
亞歷山大.格雷厄姆.貝爾利用太陽光開發光電話用於傳輸信息。這種光電話從未用於商業生產。
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