The proof strength can be used to evaluate the tension-compression fatigue strength of gray cast iron, and also used as the stress level of the tension-compression fatigue test.

利用引伸计拉力试验中的规定总延伸强度可以评价灰铸铁的拉压疲劳极限，也可以利用该数值作为预计的疲劳极限，用于拉压疲劳试验应力水平的选取。

The sea wall was not proof against the strength of the waves.

防波堤挡不住海浪的力量。

Singapore regards Macau’s strength not as a competitive threat but rather as proof of concept.

新加坡不把澳门的实力当竞争威胁而把其看做是对某些思想观念的证明。

As a result, gold is relatively "recession-proof," as evidenced by its relative strength in 2008.

因此，黄金是相对“抗经济衰退”的，它在2008年的相对强度证明了这点。

Singapore regards Macau's strength not as a competitive threat but rather as proof of concept.

新加坡认为澳门的优势不是一个竞争性的威胁，而是概念化的例子。