trimmer joist

英 [ˈtrɪmə(r) dʒɔɪst] 美 [ˈtrɪmər dʒɔɪst]

网络  搁栅

英英释义

noun

  1. joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc.

      Synonym:    trimmer

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