Paul Nipkow obtains a patent in Germany for TV, using a selenium cell and a mechanical scanning disk. First long distance call: Boston to NYC.是什么意思_Paul Nipkow obtains a patent in Germany for TV, using a selenium cell and a mechanical scanning disk. First long distance call: Boston to NYC.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句