气流调节阀：气流调节扭与挡风板均为高密度PP材质，用304不锈钢方棒连接，手动调节外部阀门旋钮，控制气流量。
Damper: both gas flow regulating button and wind board are high grade PP material, connected with 304 stainless steel bar, manually adjust the outside valve knob, control air flow.
而冷加工钢筋，尤其是冷轧扭钢筋，用于板类受弯构件中具有较多优越性，宜大力推广应用。
However cold-finished steel, especially cold rolled twisted steel is of more advantages in components in bending such as slabs. Therefore it shall be popularized.
最后，对板肋在垂直于其跨度方向上肋顶和肋底相对位移的数据进行了分析，这种肋顶和肋底的相对位移是由肋梁受扭产生的。
Finally, torsion rule of ribs is been found through anglicizing the relative data of displacement, which is caused by torsion of tip and bottom of ribs.
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