nonperiodicity
1. 21 layersperiod and 17 lay- ers nonperiod Mo/Si mirrors are fabricated by DC MCS technique.
21层周期和17层非周期Mo/Si结构反射镜。
2. It is shown that the entropy evolution exhibit nonperiodicity vibration.
结果表明,离子熵的演化呈现非周期性的振荡。