firestopping
simple past tense and past participle of punch above one's weight.
Material used as a firestop.
A surname from German.
(astronomy) An observational branch of astronomy, which deals with the study of ultraviolet emission from celestial objects.
施工業者は安全基準への適合を確認するため、設備ダクト周りの耐火封止材を点検しました。
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