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| Chinese | English |
| 光合光子流量密度 | photosynthetic photon flux density |
| 度量衡学 | metrology The science of measurement (关于度量的科学。) |
| 色度测量 | colourimetry Any technique by which an unknown colour is evaluated in terms of standard colours; the technique may be visual, photoelectric or indirect by means of spectrophotometry (采用标准颜色来评价一种未知颜色的任何技术，该技术可能是视觉，光电或间接分光光度法手段。) |
| 雷电危险度量因子 | lightning risk scaling factor |