- organic impurities
- organic impurity
- 有机: organic organic
- 杂质: impurity; foreign substance; ...
- 有机杂质检验: organic impurities test
- 有机杂物: foreign organic matter
- 混凝土用细集料中有机杂质含量的测试方法: standard test method for organic impurities in fine aggregates for concrete
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