7、lock单闩锁Designload设计荷载Deflection挠曲变位Dimensionaltolerance尺寸限差Designedstaticwindpressure设计静止风压Deadload永久荷载Dynamicpressure动压力Differentialpressure差压Distancepiece调距块Extrudedshape压制形状Extrusion挤压料Expansionjoint伸缩缝Element元件/构件Endplate端板 Highyieldsteel高屈强比钢Hinge枢轴/折页 Imposedload强制荷载 Jo