- pilot-balloon theodolite
- шаропилотный теодолит
Англо-русский строительный словарь. 2013.
pilot-balloon theodolite
Смотреть что такое "pilot-balloon theodolite" в других словарях:
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pilot balloon — A small rubber balloon filled with hydrogen or helium. It ascends at a uniform and known rate (i.e., 500 ft/min). A theodolite tracks the balloon, and the wind velocity is thus determined at various levels … Aviation dictionary
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