The numerical mode was -happily invented to obviate all these difficulties, by the principle of simplification which is its distinguishing characteristic^ The nine numerals, and Cipher, are represented^ each, by a different flag. To repeat... A Treatise on Telegraphic Communication, Naval, Military, and Political - 138 ページ John Macdonald 著 - 1808 - 186 ページ 全文表示 -
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