The effect of original defect size on the fatigue life can be described with the fourth root of the defect area perpendicular to the loading direction.
试件初始缺陷尺寸对疲劳寿命的影响，可用垂直于载荷方向缺陷截面积的四次方根来表达。
The fourth predicate $i/*/price = 29 looks for price elements under any root element, not just "book."
第四个谓词 $i/*/price =29 将查找任何根元素下的 price元素，而不仅仅是在 “book” 元素下的。
Fourth, the activity of ascorbic acid oxidase in leaf and root were enhanced. The peroxidase activity in leaf was enhanced too.
第四，叶片与根中的抗坏血酸氧化酶及叶中的过氧化物酶活性显著增强；
And the fourth thing to notice is, I've used abstraction. I've said nothing about how I'm going to make square root.
第四件事情就是，我运用了抽象，我对怎么去求平方根没有提及。
And the fourth thing to notice is, I've used abstraction. I've said nothing about how I'm going to make square root.
第四件事情就是，我运用了抽象，我对怎么去求平方根没有提及。
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