讨论岩体风化的基本概念，澄清一些传统的模糊认识。
A discussion is made on the basic concept of rock weathering, and some fuzzy cognition is clarified.
讨论了第一和第二宇宙速度的含义，澄清了与这两个速度有关的一些模糊认识。
The implications of the first cosmic velocity and the second cosmic velocity are discussed. the blurred knows relative to the two velocities are cleared.
澄清了对牛顿第一定律的一些模糊认识，对认识牛顿三定律之间的关系和理论的完备性和逻辑性提出了不同的看法。
The obscure understanding on Newton's First law was cleared up. Some different idea about the relation of Newtion's three law and the theory's completeness and logic was put forward.
澄清了对牛顿第一定律的一些模糊认识，对认识牛顿三定律之间的关系和理论的完备性和逻辑性提出了不同的看法。
The obscure understanding on Newton's First law was cleared up. Some different idea about the relation of Newtion's three law and the theory's completeness and logic was put forward.
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