Displacement energy是什么意思

用法例句

The movement capability can reach class 50 according to ASTM C920,exceeding the current national standard.

介绍了一种高位移能力硅酮耐候密封胶,它特别适用于建筑采光顶、高层和超高层幕墙等接缝形变较大处的耐候防水密封。