The coherence bandwidth of shortwave channel is calculated by using the densityprofile and wave propagation features in ionosphere.
从该电子密度模式和电离层波传播特性出发确定多径分量，计算短波信道相干带宽。
2
The densityprofile and the free energy profile of carbon dioxide have a "mirror symmetry", where the high density coincides with the free energy well.
二氧化碳的密度分布和自由能分布有一个明显的“镜面对称”的结构，高密度区域对应自由能的深阱。
3
Geologist can interpreted the lithology, era, sand thickness, sedimentary sequence of the stratum, folding, small fault from the processed depth-densityprofile.