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| 酸洗废水 | |||
| 酸洗废水指用硫酸或盐酸清洗钢板表面的锈或金属镀层时，所排出的酸性废水叫做酸洗废水 | |||
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pickling waste water : 1 phrase in 1 subject |
| Ecology | 1 |
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