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fireproof shutter造句

"fireproof shutter"是什么意思   

例句與造句

  1. Fire protection of an escalator floor opening may be provided by adding automatic sprinklers or fireproof shutters to the opening, or by installing the escalator in an enclosed fire-protected hall.
  2. Interior structure is a mixture of wrought and cast iron, supporting arched brick floors in a system that was referred to at the time of construction as " fireproof . " The building's windows were provided with fireproof shutters.
  3. The BIBC, which was formed in 1883, evolved from a series of iron manufacturing businesses ( American Corrugated Iron Co ., 1868; Metallic Corrugated Shingle Co ., 1871; and Corrugated Metal Co ., 1873 ) that made corrugated iron, fireproof shutters and doors and iron roof trusses.
  4. It's difficult to find fireproof shutter in a sentence. 用fireproof shutter造句挺難的

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