National Quality Standard（质量标准）所有提供早期儿童教育机构和服务，并编写对儿童和家庭正在提供什么质量的服务，任何方面都从健康和安全出发…
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National Ambient Air Quality Standard 国家环境空气质量标准
National Bmbient Bir Quality Standard 国度环境空气质量标准
national primary ambient quality standard 国家一级环境空气技师标准
以上来源于: WordNet
The quality of W-03, Zhu 9217, Xian 2007 achieved national quality standard with high yield and good resistance, which can be used in production test and demonstration.
驻9217、西安2007的品质达国优标准，且丰产性好、抗逆性强，可直接进行生产试验示范。
The cloth bleached by that means is not only high in whiteness but also high in strength, and therefore its whole quality has paralleled or even beyond the existing national quality standard.
采用纯漂工艺漂白的布匹，产品质量全面达到并超出了现有国家标准，不仅白度高，而且强力也高。
The quality standard of water supply source shall comply with the national water quality standard.
城市供水水源的水质应当达到国家规定的水质标准。
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