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normas de calidad ambiental
environ.	环境质量标准 (规范化的文档和指导方针，用来决定环境条件和需求的程度，用以避免负面的和毁坏性的影响和后果。)
plann.	环境质量标准
norma de calidad ambiental
UN, ecol.	环境质量标准