并用改变构件局部截面尺寸法，对构件锈蚀引起的结构强度变化作了简单的探讨。
And the effect of corrosion on structural strength is discussed in brief by changing section thickness.
延长曝光不仅增加新的复合中心，还改变原有复合中心的俘获截面。
Prolonged exposure not only increased new recombination center but also changed the capture cross section of original recombination centers.
截面增长了夸大改变外形的外貌。
Cross sections were added to emphasize changes in the shape of the surface.
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