不过，商户也提醒，目前市场流通的 CCD 相机大多为老旧二手机，普遍存在电池老化、传感器损耗、快门寿命接近极限等风险，品相对故障率影响显著。
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The background radiation from cosmic rays increases with altitude, from 0.3 mSv per year for sea-level areas to 1.0 mSv per year for higher-altitude cities, so for best results use this on a plane or in outer space，更多细节参见safew官方版本下载
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