quality flaw的用法和樣例：
例句
- When mud in bricking-ups dries and solidifies, quality defects shall not be amended by knocking but being rebuilt.
砌體中泥漿干固時，不得用敲打的辦法修正其質量缺陷，而應拆除重砌。 - This paper analyzes the reason and the quality examination that causes the reinforcing bar beton quality fault.
分析鋼筋混凝土質量缺陷產生的原因和質量檢測方法。
