According to the influence of degenerate point configurations of projection matrix, the number of calibration correspondences and the track of users head are improved.

根据对投影矩阵的退化点结构的影响，改进了选取标定的对应点个数和用户头部的运动轨迹。

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According to the interaction between every two piles, the pile-head flexible matrix of the bending viscoelastic dynamic analysis of pile groups is given.

根据桩间两两相互作用关系给出了群桩弯曲粘弹性动力分析的桩头柔度矩阵。

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Get the projection matrix exactly right and use of the default Oculus head model.

使用Oculus默认的头部模型(head Model)和并使得投影矩阵完全正确。

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In 2007, Dinosauria's paleontologists uncovered an unusually complete allosaurus in the Dana Quarry, which proved even more unusual in the laboratory: As the head was chipped from the matrix, a stegosaurus leg bone was found with it.

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