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国家天文大地网
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国家天文大地网
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工学
大地起算数据
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national astro-geodetic network
国家天文大地网
在中国领土范围内,由互相联系的大地测量点(简称大地点)构成的网,大地点上设有固定标志,以便长期保存和使用。简称国家大地网。建立国家大地网的经典方法是边角测量,需要采用天文观测方法测定天文经纬度和方位角,所以又称为天文大地网。
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small angle X-ray scattering
small angle Xray scattering
small-angle X-ray scattering
small-angle X-ray scattering, SAX
small angle X-ray scattering (SAXS)
small animal nuclear medical imaging
small animals living imaging
small aperture
small area analysis by X-ray photoelectron spectroscopy
small area analysis by Xray photoelectron spectroscopy
small area estimation
small artery
small Asian mongoose
Small Astronomical Satellite
Small Astronomical Satellites 3
small branded swift
small cancellation group
small canonical ensemble
small category
small celestial body attachment
small celestial body reorientation
small cell lung cancer
small centipeda
small circle
small circle girdle
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更新时间:2026/8/5 11:43:36