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再拆按累计值分组公式，思路比技巧更重要！
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App07:35![Excel正则中的转义\和或条件匹配[]元字符的详细用法](http://p3-sign.bdxiguaimg.com/tos-cn-i-pk90l89vgd/376ab3fac51648ed85644ba4c4b6de17~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202407161058071A9AA3B9B1EFF1F2FA0E&requestFrom=704&version_code=80402&x-expires=1752634689&x-signature=wWrh2viUiBkmKlrFm4SBSIFmnQ4%3D)
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