Spherical particles have minimum scattering area, high packing density; which is beneficial to the luminescent intensity and lifetime of the devices.
球形颗粒荧光粉的光散射面积最小，堆积密度大，有助于提高发光材料的发光强度和使用寿命。
2
Objective the variations of the site and shape of focal region for a concave spherical ultrasound transducer in the case of high sound intensity and stronger attenuation were studied.
目的研究凹球面超声换能器的声焦域在高声强和媒质有较大衰减情况下，其形状和几何位置的变化。
3
High-density high-intensity carbon materials were prepared through specific process with coke and spherical graphite as raw materials and CJF-43 and FB as additive.