N95形成一个相对密闭的空间,增加了无效通气量,使进入肺泡的空气中氧含量下降。效果跟高原训练差不多。
N95形成一个相对密闭的空间,增加了无效通气量,使进入肺泡的空气中氧含量下降。效果跟高原训练差不多。
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