Based on the conjugation theory of space surface, the vector relation of gear cutting is ensured.

基于空间曲面共轭原理, 确定齿轮切齿矢量关系,建立了螺旋锥齿轮的齿面矢量方程.

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Innovative achievements have been scored in the study of basic theory of space science.

中国空间科学在基础理论研究方面取得了若干创新成果.

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Newton's absolute space - timeof view and's relativity theory of space - timeof view both are simple static space - timeof view.

牛顿的绝对时空观和爱因斯坦的相对论 时空 观都是时空割裂的简单性静态 时空 观.

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