polyyinyl alcohol的用法和樣例：
例句
- The polyvinyl acetate and polyvinyl alcohol used are ideal restoring materials obtained by numberless screening.
聚醋酸乙烯和聚乙烯醇是經(jīng)過(guò)無(wú)數次篩選的理想修補材料。 - The preparation and the properties of polyvinyl alcohol spilled oil gelling agents on water surface.
聚乙烯醇系水面溢油凝油劑的制備與性能。
