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黑退火
met.
black annealing
;
blue annealing
(热轧钢板的)
;
open annealing
;
scaled annealing
黑
在空气中
退火
auto.
black annealing
热轧钢板
黑退火
met.
blue annealing
黑退火:
7 phrases
in 2 subjects
Metallurgy
6
Technology
1
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