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水準測量，國測一大隊在行動(dòng)！

2020-05-06 08:25來(lái)源：新華社

國測一大隊隊員吳元明在西藏定日縣曲當鄉境內進(jìn)行水準測量（4月18日攝）。水準測量是一種利用提供水平視線(xiàn)的儀器（如水準儀、水準標尺），測定地面不同點(diǎn)之間的高差，并以此推算高度的一種方法，是經(jīng)典大地測量的重要技術(shù)之一。在目前正在進(jìn)行的2020珠峰高程測量中，部分國測一大隊隊員承擔了水準測量的任務(wù)。新華社記者孫非攝

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