常見例句雙語例句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、傘形等形狀的微裂紋是由這三種基本形狀的微裂紋構(gòu)成的。 返回 zigzag cracks