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Terms for subject Polymers containing 或" | all forms
ChineseEnglish
氨基氰 H₂NCN 或HN：C：NHcyanamides
直径小于或等于 10m 的颗粒物PM 10
直径小于或等于 2.5m 的颗粒物PM 2.5
螺旋或类螺旋生长spiral or screw-like development

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