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美国石油学会标准
compr.
code API
dril.
API Standard
earth.sc.
American Petroleum Institute Standard
;
Code of American Petroleum Institute
oil
American Petroleum Institute Standard
(API Std)
美国 石油学会 标准
:
15 phrases
in 3 subjects
Automobiles
1
Drilling
11
Oil / petroleum
3
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