trimmer joist

英 [ˈtrɪmə(r) dʒɔɪst]

美 [ˈtrɪmər dʒɔɪst]

网络  搁栅

英英释义

noun

• 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