data density meaning in English

数据密度

While these distributions usually model correctly the main body of the data density , they cannot model the extreme values , which are more important for risk assessment
其对资料密集地区之浓度分布预测较正确，但无法模拟极端值，但其为风险评估时之重要地区。
The research interests in this team are nonlinear optics at low light intensities , including photorefractive nonlinear optics ( photorefractive materials , effects and their applications ) , optical storage materials , nonvolatile optical recording technology and mechanics with high recording rates , high data density and high data transfer rates , nonlinear dispersive system and the dynamic propagation properties of photons in such dispersive system , and nonlinear optical properties of phasonian systems such as electromegnetically induced transperancy
本实验室目前从事弱光光学非线性方面的研究：主要包括光折变非线性材料、效应以及应用；超快超高密度光存储材料、非挥发存储技术及其机理；非线性色散系统以及光子在非线性色散系统中的传播动力学；量子相干系综中的非线性光学性质如电磁感应透明等几个方面的研究。