- longitudinal member
- 纵: release; set free; let go
- 构件: member; construction member; ...
- 操纵构件: control member
- 纵构件数: girder numeral; longitudinal number; longitudinal numeral
- 构件: (结构或机构的组成单元) member; construction member; constructional element; frame member; structural component; structural member; structural parts; component (part); structural unit
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