雙峰反向人字形交錯層理bimodal crossbedding: 雙向交錯層理chevron crossbedding: 人字形交錯層理compound crossbedding: 復合交錯層理convex crossbedding: 凸形交錯層理crossbedding pattern: 交錯層理模式下載手機詞典可隨時隨地查詞查翻譯