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单词 isotach
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isotach
isotach n.
Brit. /ˈʌɪsə(ʊ)tak/
,
U.S. /ˈaɪsəˌtæk/
[Greek τᾰχύς swift] a line on a chart or diagram connecting points where the speed of something, esp. the wind, is the same.
ΘΚΠ
the world > the earth > weather and the atmosphere > weather > study or science of weather > diagrams, graphs, or lines > [noun] > wind
wind-rose1846
anemogram1868
isotach1947
1947 Mineral. Abstr. X. 159 Isogyres and iso-taches (curves of equal velocity) are plotted on a stereographic net.
1955 W. J. Saucier Princ. Meteorol. Anal. x. 304/1 The wind field is analyzed by drawing streamlines and isotachs, which give, respectively, the course of flow and its speed.
1970 Nature 11 Apr. 133/2 (caption) Geostrophic isotachs (in knots) at 500 mbar for 00 GMT November 14, 1968.
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