The results show that the crack growth rate under high-low cycle complex fatigue load is greater than that under low cycle fatigue load, and so the fatigue life is obviously reduced.

结果表明：与纯低周载荷作用相比，高低周复合载荷下球墨铸铁的裂纹扩展速率明显加快，极大地降低材料的疲劳寿命。

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To make things even more complex, the cycle of change is not linear.

有可能因为变革的周期不是线性的所以事情会更加复杂。

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Projects that have a large team, multiple components that must be integrated, and a long development cycle use sophisticated, complex project scheduling tools.

拥有大型团队、必须集成的多个组件，以及长时间的开发周期的项目使用成熟，复杂的项目计划工具。

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Specialized prostheses (replacements) and orthoses (braces) for competitive disabled athletes who run, ski, and cycle can be more complex.

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Changing the figure to take account of the cycle would make more sense, but it would introduce a complex and disputable new calculation, with countries arguing endlessly over precisely where they were in the cycle.

ECONOMIST: Europe's fiscal follies

The immensely complicated astronomical clock built by Richard of Wallingford, abbot of St Albans, was so complex it took eight years to run through its full cycle of calculations and was the most intricate machine ever built up to that point.

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