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| standards for environment quality | |||
| ambient quality standard | |||
| environmental quality standard Normative documents and guidelines for determining the degree of environmental conditions and requirements to avoid negative and damaging effects, influences, and consequences (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。); environment quality standards | |||
| environmental quality standards | |||
| environmental quality standard | |||
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| environmental quality standard | |||
| 环境质量标准: 24 phrases in 12 subjects |
| Business | 1 |
| Chemistry | 1 |
| China | 2 |
| Earth sciences | 1 |
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| Environment | 1 |
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| Technology | 8 |
| Water resources | 2 |
| Wind Energy | 1 |