peak flux density

基本解释

Sap flow density is low and anomalistic, even formed multi-peak curves which has not obvious peak value during rainy days, sap flux density during night is larger than its in sunny days.
各树种阴雨天液流密度变化曲线均不规则且液流密度值较小，甚至出现多峰曲线，但峰值并不明显。
Diurnal change of net photosynthesis rate(NPR) in Xinjiang cotton fields with high yield had one peak value appearing at 14:00. NPR was positive correlation with photosynthetic photon flux density.
高产棉田净光合效率日变化有1个明显的峰值，出现在14：00，它与光合光量子通量密度呈线性正相关。