This is the 10355th most frequent Japanese word.
高炉
Blast furnace.
高炉 in this sentence refers to a 'blast furnace,' a crucial industrial equipment used for metal smelting.
この工場には最新式の高炉があります。
This factory has the latest blast furnace.
高炉 here is used to highlight the subject of maintenance within industrial engineering.
高炉のメンテナンス作業は非常に重要です。
Maintenance work for the blast furnace is exceedingly important.
In this sentence, 高炉 emphasizes the importance of the operational skills related to this equipment.