Unverified85% confidenceDecision RuleTime unknown
车载环境（尤其白天车内漏光）对亮度要求极高，普通200-400 ANSI流明的便携投影仪在车内几乎无法使用，需≥600 ANSI流明配合遮光窗帘才能在半亮环境下勉强观看，全黑车内至少也要400 ANSI流明
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