“pollution index”的概念、定义、翻译、参考文献-科学参考

单词	pollution index
释义	pollution index 污染指数
随便看	background wave back ground (即底影) back guide backguy back guy back-hand drainage backhand method backhand technique back hand welding backhand welding back haul backhaul backhaul cable back head back header back hearth backheating backhoe back hoe back-hoe bucket backhoe bucket backhoe dredger back-hoe front end loader backhoe loader backhoe shovel

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