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visual zenith plummet
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visual zenith plummet
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工学
大地测量仪器
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visual zenith plummet
目视天顶仪
将望远镜的视准轴与铅垂线重合,通过目镜观察,向天顶方向确定铅垂线的测量仪器。
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mark
Marka
Markab
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Markarian object
Mark Behr
Mark Borisovich Mitin
Markeb
marked graph
markedness in Typology
marked point process
marked process
marked ruler
Mark Edward Thompson
marker
marker-aided selection for forest tree
marker and cell method
marker-assisted gene polymerization
marker-assisted selection
marker-free transgenic technology
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