此符(fú )号需要在英文(wén )状(zhuàng )态下(xià )输(shū )入,操作步骤如下第(dì )一(yī )步点击(jī )键(jiàn )盘上(shàng )的减号按钮,显示(shì )符(fú )号为“”第二步依旧是减(jiǎn )号按钮,同(tóng )时(shí )按住(zhù )shift键(jiàn ),可打出符号(hào )“_”第三步选择(zé )小(xiǎo )于号所在的按(àn )钮(niǔ ),可打(dǎ )出符(fú )号“,”合在一(yī )起后
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