此符(fú )号(hào )需要(yào )在英(yīng )文状(zhuàng )态下输入(rù ),操(cāo )作步骤如下第一步点击(jī )键盘上(shàng )的减号(hào )按钮(niǔ ),显示(shì )符号(hào )为“”第二步(bù )依(yī )旧是减号按钮(niǔ ),同(tóng )时按住(zhù )shift键,可打出符号“_”第(dì )三步选择小(xiǎo )于(yú )号所在的按钮,可打(dǎ )出符号(hào )“,”合在一起后
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