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		多硫化钙还原高浓度含铬废水实验研究
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			Experimental study on reduction of high concentration chromium-containing wastewater by calcium polysulfide
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| 图5. CaSx对实际含铬废水的还原效果 | 
| Fig.5. Reduction effect of actual chromium-containing wastewater by CaSx | 
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