symmetrical fold
常見(jiàn)例句
- Fan-like cleavage means cleavages at axis faces occurring in the core of a fold, which spreads in fan like and shaped like branches of trees or straight with good symmetrical patterns.
扇狀劈理是在褶曲核部發(fā)育的軸面劈理，呈扇形展布，為破劈理，劈理間距不等，呈樹(shù)枝狀或平直狀，對(duì)稱性較好。
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