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有效性检验
busin.
significant test
;
test of validity
stat.
validity check
tech.
validity examination
制动系统/排放控制系统
有效性检验
查
auto.
effectiveness check
examination
有效性 检 验
:
4 phrases
in 4 subjects
Drilling
1
Securities
1
Statistics
1
Telecommunications
1
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