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词汇
北京古观象台
释义
北京古观象台
běi jīng gǔ guān xiàng tái
原名“观象台”、“瞻象台”。世界现存最完整的古观象台之一。在北京建国门南泡子河旁。于明朝正统年间1436-1449兴建。至今留有清制的八件仪象:天体仪、赤道经纬仪、黄道经纬仪、地平经纬仪、象限仪、纪限仪、地平经仪和玑衡抚辰仪。是全国重点文物保护单位。
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under water douche
under-water douche
underwater dragging cable
underwater dragging system
under-water dredge pump
underwater drill
underwater drilling
underwater drilling-andblasting
underwater drilling and blasting ship
underwater drilling blast
Underwater drilling blasting
underwater drilling blasting shock wave
underwater dry cabin system
underwater dune
underwater dynamics
underwatered
underwater effect
underwater ejection
underwater ejection seat
underwater electrical
underwater electrical cable
underwater electrical slip ring
underwater electric field
underwater electric manipulator
Underwater Electric Potential
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更新时间:2026/8/9 7:13:18