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to phrases
frequency surface
math.
统计中的
次数曲面
stat.
频率面
;
频率曲面
tech.
次数曲面
frequency surface
:
18 phrases
in 9 subjects
Air defense
2
Aviation
1
Electronics
5
Geophysics
1
Metallurgy
1
Nautical
1
Space
3
Surgery
1
Technology
3
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