论述了化学哲学的定义及化学哲学的研究内容，并对化学科学理论性问题作了哲学分析。
We present the definition and study content of chemistry philosophy in the paper, and we also analyze the theoretical problem of chemistry on the philosophical plane.
中国对美国的威胁感到失望，并且试图将争论的焦点集中在理论性问题上，但未能成功。
China is frustrated with the hectoring it receives from the United States, and has tried-unsuccessfully-to focus the debate on economic theory instead.
特别是在一切重大理论性、原则性问题上的正确观点。
In particular, of correct views on all major theoretical questions of principle.
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