这种瓣膜是用不锈钢支架和牛心包制成的。
The valve is made of a stainless-steel stent and cow pericardium.
采用方钢支架式设计，给人以简单轻巧的感觉。
Square steel support design gives people simple and handy feeling.
沙发的底座有不锈钢支架支撑，上面的软垫也很舒适。
Sofa base stainless steel stent support, the above is also very comfortable cushion.
玻璃台面，钢脚支架。
玻璃台面，钢脚支架。
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