从铌酸锂和钽酸锂晶体的结晶学数据出发，分析其结构特征和组成化学键的结合情况。
Starting from the crystallographic data of lithium niobate and lithium tantalate crystals, structural characteristics and chemical bonding behaviors of both crystals are studied.
结果表明，机械力化学效应使得淀粉颗粒结晶结构受到破坏，结晶程度降低，最终由多晶态转变成非晶态。
The results showed that the crystal structure of potato starch could be destroyed by ball milling and the crystallinity decreased from polycrystalline to amorphous state.
这是由于纤维在化学上不活泼，表面能低，表面缺乏极性基团，且是高度对称的亚甲基结构，使得纤维具有很高的结晶度和取向度。
Because the fiber is of chemical inertion, low surface energy, lack of polar groups, and highly symmetric methylene structure, the fiber has a high degree of crystallinity and orientation.
这是由于纤维在化学上不活泼，表面能低，表面缺乏极性基团，且是高度对称的亚甲基结构，使得纤维具有很高的结晶度和取向度。
Because the fiber is of chemical inertion, low surface energy, lack of polar groups, and highly symmetric methylene structure, the fiber has a high degree of crystallinity and orientation.
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