jack rafter

名词 n.
中文释义

英文释义

名词 n.
  1. One of the shorter rafters used in constructing a hip roof. UK
  2. Any secondary roof timber, such as the common rafters resting on purlins in a trussed roof; also, one of the pieces simulating extended rafters, used under the eaves in some styles of building. US

词形变化

jack rafters plural
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