The so-called active components, mainly composed of semiconductor and display, refer to those whose physical and chemical properties change when electrified.
所谓主动元件是指通电后物理或者化学特性发生变化的元件，主动元件主要是半导体元件和显示屏。
Besides, Blending, chemical reaction and physical treatment are important ways to change the properties of films.
此外，共混、化学改性和物理处理也是改变壳聚糖膜性质便捷、重要的方法。
If you want to know the structure and properties of the atom, you must make physical and chemical experiments to change the state of the atom.
你要知道原子的组织同性质，你就得实行物理学和化学的实验，变革原子的情况。
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