结论前磨牙区的分角投照根尖片和平行投照根尖片均能精确反映牙齿的实际长度。
Conclusion Both periapical films in bisecting Angle technique and in distant paralleling technique can reflect the real teeth length precisely in premolar area.
为更好反映平板边界层流动的物理特征和本质，该文同时考虑到主流的非平行性和压力梯度的作用。
The influence of main flow nonparallel and pressure gradients is considered to show the physical characteristics of flat boundary flow.
沙脊呈平行的、微弓形排列，这能反映滨线迁移的历史。
Cheniers have a parallel, gently arcuate alignment reflecting the migratory history of the shoreline.
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