亦称为“结构涨落”或“相起伏”。液态金属从宏观上看是原子作无规则排列的非晶体，但其中包含着许多类似晶体结构的、时大时小、时长时消的原子有序集团，这种现象称为“结构起伏”。尺寸越小的结构起伏在液体中出现的几率越大，而且在每一温度下，结构起伏都有一极限尺寸，温度越低，该极限尺寸越大。
在相同的频率条件下，弛豫铁电体的结构起伏程度越大，弛豫程度越低。
The larger the structural fluctuation of RFE was, the lower the relaxation degree was in the same frequency condition.
采用捕获液态界面改进的相场方法，系统地研究了结构起伏、能量起伏对过冷纯金属熔体中树枝晶生长的影响规律。
The affecting law of structure fluctuation and energy fluctuation on dendrite growth in pure undercooled melt was studied by simulation of a phase-field method.
场地上的建筑由四个像素化的起伏结构组成，这种设计回应了城市中湿热的气候。
Comprised of four pixelated undulating structures, the architecture of the site is designed in response to the city's hot and humid climate.
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