A resin derived from methacrylic acid.一种用于制树脂的二羧酸.Ethylene - propylene - diene rubber ( EPDM ) was filled with nano - CaCO 3 which was in - situ modified by methacrylic acid ( MAA ).使用甲基丙烯酸 ( MAA ) 原位改性纳米CaCO3填充三元乙丙橡胶 ( ...
庄稼汉们审视着母牛, 走开了又回来, 不知道怎样才好.Peasants looked over the cows, went away, and came back, perplexed.那庄稼汉感到诧异而不安, 一口气喝完一小杯白兰地酒.The peasant, surprised and disturbed, swallowed his tiny glass of brandy in one gulp.黝黑的皮肤,健壮的肌肉是饰演庄...