字符: character号: howl; yell对比: contrast; comparison; balanc ...符号对比: character correlation符号对: symbol pair信号对比: signal contrast信号对比度: signal contrast信号员的签字符号对空假期具有重要意义: the signalman’s signature sign is significant to the vacant vacation状态带符号对: state tape symbol pair电报符号对照表: telegraph alphabet带符号字符: signed character单字符号: one-letter symbol符号字符: sign character; symbolic character加字符号: caret连字符号: hyphenation连字符号的: hyphenated省字符号: apostrophe数字符号: digit sign; digit symbol; digital character; numeric character; numerical notation; numerical symbols; symbol of numeral四文字符号: tetragram脱字符号: caret文字符号: letter symbol文字符号法: literal symbol system无符号字符: unsigned character用用字符号: using symbols using words字符符号: character symbol
