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。
2
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。
3
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.