为了结构上的应用，玻璃往往使用传统的方法以增加强度——退火。
For structural purposes, glass is often strengthened the old-fashioned way - by tempering.
通过对材料进行干燥和退火处理，科学家们移去了弱的结合水以使陶瓷纤维形成致密结构。
By drying and annealing the material, the scientists mainly remove weakly bound water to make the ceramic fibres form a denser structure.
这过程被称为完全退火，因为它去除了以前组织结构的所有痕迹、细化晶粒并软化金属。
This process is known as full annealing because it wipes out all trace of previous structure, refines the crystalline structure, and softens the metal.
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