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Mathematical Problems in Engineering
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2018
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Article
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Tab 1
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Research Article
Surface Performance Multiobjective Decision of a Cold Roll-Beating Spline with the Entropy Weight Ideal Point Method
Table 1
Major chemical composition of grade 20 steel (mass fraction, %).
C
Si
Mn
P
S
Ni
Cr
0.20
0.17
0.37
0.35
0.65
0.035
0.035
0.30
0.25