过冷，温度低于凝固点但仍不凝固或结晶的液体称为过冷液体。过冷液体是不稳定的，只要投入少许该物质的晶体，便能诱发结晶，并使过冷液体的温度回升到凝固点。这种在微小扰动下就会很快转变的不稳定状态称为亚稳态。
n. undercooling ; supercooling
adj. subcooled
In order to solve the problem of supercooling and phase segregation of sodium acetate trihydrate during solidification,it is necessary to add appropriate nucleating agent and thickeners.
为改善储热材料三水醋酸钠凝固过程中存在的过冷和相分层问题,必须添加合适的成核剂和增稠剂。
参考来源 - 储热材料三水醋酸钠的添加剂评选与优化实验研究The Avrami exponent(n),crystallization rate parameter(Z_c),crystallization activation energy(E_c) and supercooling degree(T) of aliphatic polyesters were obtained. The results show that the crystallization behavior of aliphatic polyesters strongly depends on the content of ester group.
结果表明,脂肪族聚酯中酯基的含量决定了其结晶特性,脂肪族聚酯的过冷度随酯基含量的降低而降低,而结晶速率随酯基含量的降低而升高。
参考来源 - 脂肪族聚酯结晶特性与分子结构的关系The influence of stability,corrosion,phase segregation,sub-cooling,and encapsulation of phase change materials on heat storage,were also presented.
同时指出了相变蓄热材料的稳定性、腐蚀性、相分离、过冷及封装特性对蓄热的影响。
参考来源 - 相变蓄热材料及其在暖通空调领域中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
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