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空氣警報
释义
空氣警報
kōng qì jǐng bào
当空气中污染物浓度超过规定的浓度，且持续十二小时以上时所发布的警报。在各广播、电视电台中插播，到警报解除为止，省市主管机关则以广播车沿街广播。
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Aviation Petroleum Coordinating Committee
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更新时间：2026/11/9 6:36:15