- sandwich frame
- 双: two; twin; both; dual
- 构架: carcass; panel work; frame; ...
- 构架: carcass; panel work; frame; buck; blind; reinforcement; thripple; backbone; framework; truss; framework skeleton; boom; staging; structural frame◇构架槽 boom well; 构架杆 truss bar; lattice mast; 构架梁 frame girder
- 成双构件: accouplement
- 对柱, 成双构件, 系木: accouplement
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