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主点
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主点【化】 principal point 主点zhǔdiǎn(1)[principal point](2)主视线与透视面的交点(3)透镜轴上这样两点中的任一点,这两点的关系是从物体任一点指向一主点的光线将从透镜平行射出,而不通过另一主点(4)航空照相机的透镜光轴与胶片面的交点
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trithionic acid
trithioozone
trithiophenyl phosphate
trithiophosphite
trithiozine
trithylborane
tritiated compound
tritiated waste
tritiation
triticale
triticeoglossus
triticeous
triticeous node
triticeous nodule
triticeum
triticin
triticonucleic acid
Triticum
Triticum aestivum
Triticum repens
Triticum sativum Lam.
tritide
tritium
tritium-breeding material
tritium-breeding materials
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更新时间:2025/10/24 21:07:14