Upon careful observation under scann ng electron microscope, it can be found that the shell thicknes is obviously controlled by the varieties of shell layers.
腹足类个体发育中壳质结构的重要特点是壳质层的微观变化，包括原有壳质层的增厚、增生与上覆超微结构相同的壳质层、增生新的超微结构层、壳质层的相互消长与显微结构的演变。
By using phenomenological method for the medium shell curve,an energy-curvature equation on three di-mensions regular space and the energy-gravitation form about gravitational interaction between bodies are given.
采用介质层壳弯曲的唯象方法，在规整三维空间中给出了能量曲率方程及物体间的能量引力形式表述，其引力方程的二个条件解分别与 Newton 引力理论及 Einstein 引力理论的有关结果相近。
This treatise sets off from the nucleon energy level superposition,searches sought the structure of the proton-neutron blend shut shell,and explains the high stability of iron nuclide 5626Fe.
从核子的能级迭加出发,探求了质子-中子混合闭壳层的结构,并对铁核素2656Fe的高度稳定性进行了解释。