名词
中文翻译：签名二合字母
同义词：
['signed digram', 'signed digraph']
例句：
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1.The company's logo is a signed digraph that represents their brand.
该公司的商标是一个代表其品牌的签名二合字母。
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2.The artist used a signed digraph to create a unique piece of art.
艺术家使用一个签名二合字母创作了一件独特的艺术作品。
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3.In the field of computer science, signed digraphs are used to represent alphanumeric characters.
在计算机科学领域，签名二合字母被用来表示字母数字字符。