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law of superposition
释义
WordReference Random House Unabridged Dictionary of American English © 2024
law
′
of superposi
′
tion,
Geology
a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.
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r & d
r&d
r/d
rd
rda
rdac
rdb
rd&d
rdd
rd&e
rdf
r-dropping
rds
rdt&e
rdx
're
r/e
re-
re
rea
reabsorption
reach
reachability
reachable
reacher
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更新时间:2026/8/29 0:14:26