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内容来自Android手机客户端
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seanfv:哥们你用的时间太长了… (2015-02-03 22:10)
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jwl126:实际只有20小时不到,远远低于说明书要求的强度 (2015-02-03 22:14)
seanfv:那确实空气好差,楼主坐标哪里 (2015-02-03 22:16)
zno520:我在工地用这种口罩一天就这样了,一般灰大的时候带两层,还好发的多。要是解除鼻子最里面那层也黑了的话,说明该换口罩了。如果短时间里面就黑了的话,最好带两个。。。 (2015-02-03 22:15)
nivenliu:我们都是活性炭 (2015-02-03 22:15)
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jwl126:广州市空气最差的一个区 (2015-02-03 22:18)
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felix_zlj:7天最多了 30 天、。。。 (2015-02-04 10:26)
胎毛:黑色那层是活性炭呀 (2015-02-04 09:41)
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Leicaqie:其实能挡住的鼻毛都能挡住,算是灰尘,真正可怕都是看不见都微粒 (2015-02-03 22:59)
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