zigzag cracks

常见例句

双语例句

• Other cracks with complicated shapes, such as the "hook" crack, the "zigzag" crack, the "chevron" crack and the "umbrella" crack, consist of the above mentioned three basic cracks.
  钩形、“人”字形、“之”字形、伞形等形状的微裂纹是由这三种基本形状的微裂纹构成的。
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