The first single-curved reflective surface has a focal length greater than that of the second single-curved reflective surface.
第一单弯曲反射面有一个焦距大于表面的第二个单弯反射。
The X Lounger is based on a single ray, traced along a periodic double curved surface.
X懒人沙发是基于单线条，沿着曲面双层折叠而成的。
Study of truncated intersector curve of single leaf and double leaf bilateral curved rotation surface;
该文给出并证明球面与单叶旋转双曲面的轨迹互变特征。
Study of truncated intersector curve of single leaf and double leaf bilateral curved rotation surface;
该文给出并证明球面与单叶旋转双曲面的轨迹互变特征。
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