该标准声明：柠檬酸-硝酸钠处理在去除游离铁合其他金属污染和轻的表面污染物时，危险性最低。
The standard states that the citric acid-sodium nitrate treatment is the least hazardous for removal of free iron and other metallic contamination and light surface contamination.
我当然不是要站出来给那些自认为是环保分子的人追加一个什么标准声明，我只是想在这个问题上独自琢磨一会儿。
I'm certainly not the one who is going to make up a standard manifesto for those of us who consider ourselves greenies, but I think I'd like to ruminate on it a while.
ISO 标签标准禁止在产品包装上发表模糊或误导性的声明，因为诸如“环境友好”和“无污染”等术语无法得到验证。
The ISO labeling standards ban vague or misleading claims on product packaging, because terms such as "environmentally friendly" and "non-polluting" cannot be verified.
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