离最近的空气质量监测站 20 公里,那个监测站还有参考价值吗？

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3 replies • 2018-02-28 10:03:14 +08:00

18202602876

Feb 27, 2018

在北京就没意义了(lll ￢ω￢)

mrhmlin

Feb 27, 2018 via iPad

@18202602876 非北京,北京监测站很密集吧,不会超过 20 公里吧......

hatw

Feb 28, 2018

自己买个呗。。。免费的悟空 M2 还不错。。。我用了几个月了。。。插到路由的 USB 口上取电