而从工程应用
And from the perspective of engineering applications
以上为机器翻译结果，长、整句建议使用 人工翻译 。
从钢铁结构工程应用的角度，迫切需要一种既能检测构件应力大小、分布以及构件的疲劳，而不通过测量应变而测应力，就能瞬时、定点、在线的检测方法。
Therefore a method for testing the magnitude and distribution of residual and fatigue lives of structure and member inside iron and steel components without testing their strains is urgently needed.
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