PAR is usually measured by a single band sensor and can also be calculated by multispectral data.

PAR通常由单波段的PAR传感器直接测量，也可以由多光谱数据计算。

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PAR is usually measured by a single band sensor and can also be calculated by multispectral data.

PAR通常由单波段的PAR传感器直接测量，也可以由多光谱数据计算。

youdao