On the basis of illustrating the meaning of optimizing mining design, the main technical contents and practicable conditions of the optimization adopted by mines are given.
在阐述矿山开采优化设计命题内涵的基础上，指出了矿山开采优化设计的主要技术内容及其实施的条件。
The aim and meaning of body teaching are illustrated, and the main contents and method of body teaching are introduced.
叙述了形体教学的目的和意义，介绍了形体教学的主要内容和方法。
Introduces the background and meaning, main research contents and structures, research methods, technique routes and expectations etc.
介绍了本文研究的背景与意义、主要研究内容与结构安排、研究方法与技术路线和预期价值等。
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