最終更新日：2024/08/03
(iron and steel manufacture) A train of rolls in a rolling mill, for making rails for railroads from blooms or billets.
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rail train
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(iron and steel manufacture) A train of rolls in a rolling mill, for making rails for railroads from blooms or billets.
rail train
DiQt（ディクト）
無料
★★★★★★★★★★
