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to phrases
key bed
gen.
键床〔座,槽〕
archit.
标准
分界
层
auto.
键槽
座
compr.
键座
dril.
标准层
;
标志层
eng.geol.
分界层
met.
键槽
tech.
基准面
;
标志层
(位)
key bed:
7 phrases
in 2 subjects
Oil / petroleum
2
Technology
5
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