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to phrases
vortex filament
agric. 涡旋丝
construct. 涡丝 (线,管)
desert. 涡旋物; 涡流线
el.mach. 涡线
hydroel.st. 涡旋线
space 涡丝
tech. 线; 涡流流线
wind.
vortex-filament
avia. 涡丝
vortex filament: 3 phrases in 2 subjects
Aviation1
Wind Energy2