The foam encased innerspring with internal three-dimensional foam structures is upholstered for use as a mattress, seating, or other flexible support structure.
具有内部三维泡沫结构的泡沫封装的内装弹簧被装饰用作床垫、座垫或者其他弹性支撑结构。
2
Based on results of test and calculation, it is concluded that the exterior steel-encased reinforced concrete frame-interior rc tube structures have very good seismic resistant performance.