对于空间曲线而言，过曲线上一点有无数多个切平面，其中有一个最贴近曲线的切平面，被称为密切平面，它在讨论曲线的性质时有很重要的作用。
平稳密切面 [数] stationary osculating plane
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提出了一种利用密切平面对两自由曲面进行追踪求交的算法。
A tracing algorithm for calculating the intersection curves of two free-form surfaces by using their osculating plane is presented in this paper.
平面反向延续到小鼓商店。它占据了整个空间形成“书屋”(一个与品牌密切相关的主题)，而不是形成空洞。
The plane continues into the Little drom Store inversely. Instead of forming voids, it occupies a volume that forms the floor of a "tree house" (a theme closely related to the brand).
主要阐述了竖向规划在整个居住区规划中的重要性，竖向规划与平面布置、空间环境以及管线规划的密切联系。
The paper mainly elaborates importance of vertical plan in overall populated area plan, the close connection between vertical plan and plane layout, space environment, pipeline plan.
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