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单词
sludge acid
释义
Sludge acid
1.
Impure dark-colored sulphuric acid that has been used in the refining of petroleum.
sludge acid
sludge acid
[
′sləj ‚as·əd
]
(materials)
The residue from the sulfuric-acid treatment of petroleum lubricants. Also known as spent acid; waste acid.
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更新时间:2025/3/29 15:52:32