Beaufort Scale

n. scale of wind speed ranging from 0 (calm) to 12 (hurricane), scale created by Francis Beaufort

The Beaufort scale is an empirical measure for describing wind velocity based mainly on observed sea conditions. Its full name is the Beaufort wind force scale.
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Noun
1. an international scale of wind force from 0 (calm air) to 12 (hurricane)
(synonym) wind scale
(hypernym) scale, scale of measurement, graduated table, ordered series
(part-meronym) calm air
2. a scale from 0 to 12 for the force of the wind
(hypernym) system of measurement, metric

beaufort scale
danh từ thang đo tốc độ gió từ 0 (tựnh lặng) đến 12 (bão)
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SCALA BEAUFORT