a length of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling
托梁,桁,搁栅。
-
joistn.托梁;桁;搁栅
-
jointn.接合点;关节;公共场所;大麻烟卷;创造性作品;创意作品;节;接合;连接;节理
"late Middle English