Unverified80% confidenceTradeoffTime unknown
检测种类越全（PM/甲醛/CO2/TVOC/温湿度六合一）单项精度反而越受成本妥协，专项治理（如只测甲醛）用单功能高精度设备更可靠
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80%
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Long-term
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Unverified检测指标越全（甲醛/TVOC/PM2.5/CO₂）单价越高但每项精度反而分散，如果核心诉求是甲醛，专测单项的电化学仪比多合一综合仪更可靠91% similarUnverified检测精度与检测指标数量存在权衡：多合一机型（甲醛+TVOC+PM2.5+温湿度）功能全但每项精度打折，单一甲醛专用机型精度更高；若核心诉求是甲醛超标判定，优先选专测甲醛的电化学单项机90% similarUnverified指标越全（甲醛+TVOC+PM2.5+CO₂）的机器单项精度往往越被摊薄成本，若核心诉求是甲醛达标判定，专攻甲醛的单一电化学传感器机型比多合一更可靠90% similarUnverified指标全覆盖与准确性存在权衡：号称同时测甲醛+TVOC+PM2.5+CO₂+温湿度的千元内一体机，往往每项都用低成本传感器堆砌，单项精度不如专项设备。装修验收建议用专项甲醛仪，日常环境监测才选多合一89% similarUnverified多合一（甲醛+TVOC+PM2.5）机型集成度高但每项精度都被妥协，专业单一甲醛探头精度更高；家用日常氛围监测选多合一，需要接近真实数据判断超标选电化学单甲醛专测88% similar
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