请输入您要查询的词汇:
词汇
ppb
释义
ppb
abbr.
(缩写
abbreviation
)
十亿分率,十亿分之…
(=
parts
per billion)
规划-设计-预算(法)(
→
PPB
)
(= Planning-
Programming
-
Budgeting
)
同义:
parts
per billion
十亿分率,十亿分之…
Planning-
Programming
-
Budgeting
规划-设计-预算(法)
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