辐照逐年自然波动（±5% 量级），单年数据不做基准、25 年模型用长期均值的核心依据。
Natural year-to-year irradiance swing of roughly +/-5%; single years must not be baselines, and 25-year models use long-term means.
AI 光伏设计平台免费开放：从术语到完整设计图纸与可研报告。