导弹发射架
起重机构台
跨轨信号架

[ noun ]
a framework of steel bars raised on side supports to bridge over or around something; can display railway signals above several tracks or can support a traveling crane etc.
<noun.artifact>

Gauntree \Gaun"tree\, Gauntry \Gaun"try\, n. [F. chantier, LL.
cantarium, fr. L. canterius trellis, sort of frame.]
1. A frame for supporting barrels in a cellar or elsewhere.
--Sir W. Scott.

2. (Engin.) A scaffolding or frame carrying a crane or other
structure. --Knight.