A methacrylic resin monomer mixture is filled in the cavity.
该模腔内注入甲基丙烯酸酯类树脂的单体混合物。
The polymer was prepared by copolymerizing vinyl sulfonate, methyl methacrylate(MMA) and methacrylic acid(MAA) in different proportions.
三元树脂由乙烯基磺酸酯、甲基丙烯酸甲酯（MMA）与甲基丙烯酸（MAA）按不同的配比共聚而成。
Methods:Silica gel tube adsorption and solvent desorption were used for sampling of methacrylic acid and analysis was performed by HPLC.
方法：以硅胶管采集空气中甲基丙烯酸，用甲醇解吸后高效液相色谱测定。
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