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垂线偏差
space	deviation of plumb line; deviation of the vertical; plumb line deviation
tech.	deflection of plumb-line; deflection of vertical; deviation of plumb-line (分量); plumb line deflection; plumb-line deviation; vertical deflection component (分量); vertical deviation
UN, geol.	deflection of the vertical

垂线偏差: 23 phrases in 3 subjects

Aviation	1
Space	3
Technology	19