The computer experimental scheme to simulate the plasma particle is de-signed. The simulation result shows the effects of finite—size particle and time difference on dispersion relation.
文中设计了等离子体粒子模拟的计算机模拟实验方案，验证了有限大小粒子和时间差分方法引起的对于色散关系的偏离；
The time history curves and the phase diagram for the oscillation are obtained by solving the differential relation between vibration amplitude and tensile load with finite difference method.
应用有限差分法求解球壳振动的振幅和外加荷载之间的微分关系，得到了球壳振动的时程和相图。
The results show that there was some difference in damage caused by rice neck blast among cultivars. The difference has close relation to the time of infection and access and the diseased parts.
结果表明，稻穗瘟病的为害程度在不同品种上存在一定差异，与侵染发病时间和发病部位关系密切。
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