pollution type的用法和樣例：
例句
- The principal component analyses for the present pollution indexes in every estu-ary along Binghou coast in Bohai Sea were made.Thus the primary pollution indexes are given.
本文對渤海濱州沿岸各入海河口進(jìn)行了現狀污染指標的主組元分析，獲得表征各河口的主要污染指標，進(jìn)而說(shuō)明各河口污染類(lèi)型。
