double-layer-truss centering的意思|示意
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英 / /
double-layer-truss定心
double-layer-truss centering的网络常见释义
叠桁式拱架 ... 桁式木拱架 wood-truss centering 叠桁式拱架 double-layer-truss centering 夹板拱架 centering by clamped planks in arch shape ...