This class of materials consists of polymers which always remain capable of being softened by heat and of hardening on cooling, even after repeated cycling.
这类材料由具有加热软化、冷却硬化甚至可重复循环能力的聚合物组成。
2
Moreover, the effect of quenching, tempering or cyclingheat treatment on the hardness values of the composite is also studied.
此外，文中还研究了淬火、回火或循环热处理对该复合材料硬度值的影响。
3
Expatiate water-cycling mode for large CFB hot-water boiler, water flow path and heat-exchanger surface structural design.