Abstract: : the concrete usually appear serious pits, gap, cellular, hole, crack problems, etc.

摘要：混凝土通常出现严重的麻面、缝隙、蜂窝、孔洞、裂缝等通病。

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The results show that the revised formula is consistent with the primary formula for the deep crack problems.

结果表明，对深裂纹问题，修正后的计算公式与原有的单一材料结论吻合较好。

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Calculated results show that this relationship can be successfully used to describe the fracture behavior of surface crack problems.

一些半椭圆表面裂纹问题的计算表明本文给出的关系式简单、有效。

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In the process, it will log millions of road miles, generate mountains of data on the safety and benefits of the car and crack lingering problems.

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He clearly still has the ability to perform at the highest level - but he will have to crack his qualifying problems if he is to convince potential employers of that.

BBC: SPORT | Motorsport | Formula One | David Coulthard

It would accelerate efforts to crack lingering technology problems.

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