According to the defect in the teaching of elementary chemistry, the teaching model of "thread" with the main part of material structure is advanced.

前言： 根据元素化学教学中存在的不足，提出实施以物质结构为主体的“主线式”教学模式。

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As the elementary building material of all matters in the universe, the ether is everywhere, and even our bodies are made up of it.

基微子作为宇宙所有物质的基本建材，以太无处不在，包括我们的身体也是以太构成。

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The fatigue limit and fatigue performance parameters of material were obtained by empirical formula. The fatigue life elementary evaluation of solar cell module was finished.

采用经验公式获得材料的疲劳极限和疲劳性能参数，完成了太阳电池组件疲劳寿命的初步评估。

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