单词：crack pattern
crack pattern的用法和样例：
例句
- To improve the visibility of the crack patterns, the structural members were often coated with whitewash.人们常常把结构构件刷成白色，以提高裂纹图形的能见度。
- No stress measurements or crack surface samples were available for examination, only the surface crack configuration.没有应力测量或裂纹表面取样可用于检验，只能依据表面裂纹图形。
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