[KongchangAI]
Unverified80% confidenceFactTime unknown

数据存储能力差异大:低端表仅保存实时读数断电清零;带NVRAM或Flash的表可存储数月至一年历史数据并支持断电保存;需长期分析的应确认支持本地历史查询而非仅依赖云端

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80%
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Long-term
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