过滤材质必须用合成的不溶于水的材料制成，例如聚丙烯或丙烯酸烯纤维。
The filter media must be made of a synthetic, non-water, soluble material, such as polypropylene or acrylic fiber.
本文研究了聚丙烯酸丁酯／聚甲基丙烯酸乙酯核／壳结构弹性体粒子对HIPS的增韧作用，提出了一个新的增韧机理。
The toughening of HIPS is studied by blending it with a polybutylacrylate/polyethylmethacrylate core/shell structure elastomer particles, an a new mechanism of toughening isproposed.
用x -射线衍射法研究了聚甲基丙烯酸对猪皮的鞣制机理，并对其与聚丙烯酸鞣剂的鞣制效果进行了比较。
Tanning mechanism of poly (methacrylic acid) to pigskin was studied by X-ray diffraction, its tanning results were compared with that tanned with poly (acrylic acid) tanning agents.
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