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deiˍ₆地cangˎ₄層
(地层)
Pinyin
di4 ceng2
Translations
noun
stratum (geology)
deiˍ₆地cangˎ₄層hokˍ₆學
(地层学)
Pinyin
di4 ceng2 xue2
Translations
noun
stratigraphy (geology)