| 单词 | station pole |
| 释义 | > as lemmasstation pole station pole n. Surveying a pole or rod set up at a station (sense 6a). ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > staff or pole > for taking off-sets station staff1653 cross1669 station pole1775 offset staffc1791 station rod1791 cross-staff1874 1775 Philos. Trans. (Royal Soc.) 65 513 Who also took..the horizontal angle contained between the plane of the section poles and the next station pole to the right or left. 1880 L. d'A. Jackson Aid Surv.-pract. 112 The station poles used as survey marks. 1991 J. Clancy Site Surv. & Levelling (ed. 2) ii. 38 Standing some distance behind the station pole, the surveyor directs his assistant into line and to insert the necessary number of ranging poles to form the line from the distant station. < as lemmas |
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