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单词 flattening
释义 flattening
[`flat·ǝn·iŋ]
GEODESY
The ratio of the difference between the equatorial and polar radii of the earth; the flattening of the earth is the ellipticity of the spheroid; the magnitude of the flattening is sometimes expressed as the numerical value of the reciprocal of the flattening. Also known as compression.
METALLURGY
Straightening of metal sheet by passing it through special rollers which flatten it without changing its thickness. Also known as roll flattening.
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