一只碗品相完好，无损伤，无修复；
Condition - one bowl is in excellent condition with no damages and no restoration;
目的：比较应用自体肋骨骨移植修复供骨后的髂棘骨缺损和无修复的髂棘骨缺损的疼痛及美观效果。
Objective. To compare the pain and cosmetic outcomes of patients with iliac crest reconstruction with those who have had no reconstruction of the iliac crest.
对无修复价值的水库进行降等运行或报废处理是解决水库病险问题的一个较优选择，但目前对水库报废的影响研究较为缺乏。
Retirement is a rational option for the reservoir dams with little rehabilitation values, but so far little attention has been paid to the impact analysis of reservoir retirement in China.
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