ultimate mechanical strength
... dynamometer测力计 ultimate mechanical strength极限机械强度 fascia mask仪表板罩板 ...
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它不仅达到所需的耐火极限，而且还具备相当高的机械强度，与楼层水泥板的硬度相差无几。
It not only achieve the required fire resistance, but also has very high mechanical strength, and hardness of cement board floor is almost the same.
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