[KongchangAI]
Unverified80% confidenceCautionTime unknown

电化学传感器存在寿命衰减,通常标称寿命2-3年或数万次测量后精度下降;长期不用也会缓慢老化。若只是一次性验收新房,可考虑租借或选用CMA认证第三方检测,而非购买设备

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