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铅锤 垂球 垂线铊 测锤
plummet  detail>>
垂线铊,铅锤
plumb-bob  detail>>
垂线铊
plummet  detail>>
铅锤;测锤
plumb  detail>>
铅锤,垂线
plumb  detail>>
线铊
plumb  detail>>
垂球
plum ob plumb bob plummet right sphere  detail>>
测锤
plumb bob plummet sounding lead  detail>>
铅垂线校正 用垂球测定垂直度
plumbperpendicular  detail>>
铅锤
plumb bob; plummet; plumb; bob; lead-hammer; lead ◇铅锤线 perpendicular; vertical  detail>>
垂线
(与另一条直线或平面相垂直的直线) perpendicular; vertical; [数学] vertical line; perpendicular line  detail>>
铅垂球
lead plummet  detail>>
测锤法
plummet method  detail>>
测锤结
hand lead bend swab hitch  detail>>
测锤孔
arming hole  detail>>
测锤索
plummet wire  detail>>
锤球;测锤
plumb bob  detail>>
漂测锤
drift lead  detail>>