charge densities 中文意思是什麼
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Due to different trap depths, physical reactions and chemical reactions, space charge in frp rod materials had different polarities and densities is influenced by temperature evidently, especially between 20 and 40 and between 100 and 120
由於陷阱深度的不同和物理、化學變化的作用，不同溫度下芯棒材料內空間電荷的積聚極性和積聚量不同，特別是在20和40之間以及100和120之間存在明顯變化。
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