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phồn thể
Từ điển Trung-Anh
(1) Mach (name)
(2) Ernst Mach (1838-1916), German physicist
(3) Mach (aeronautics), unit of speed based on speed of sound = 1 Mach = 1224 km per hr
(2) Ernst Mach (1838-1916), German physicist
(3) Mach (aeronautics), unit of speed based on speed of sound = 1 Mach = 1224 km per hr
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