zigzag cracks

常见例句

雙語例句

• 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.
  鉤形、“人”字形、“之”字形、繖形等形狀的微裂紋是由這三種基本形狀的微裂紋搆成的。
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