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colluvial adj.【地質學;地理學】崩積的。

colluvium

Digging measures for tunnel going through loose colluvial deposits and watery zone 通過松散堆積體和涌水地段的隧道掘進措施

Colluvial deposits at the foot of valley slopes usually affect only narrow strips of valley bottom . 河谷坡腳處的崩積體通常只影響到谷底較窄的地帶。