常見例句Results show that reaction velocity, intrinsic viscosity of PET, carbonyl content and meltingpoint increase with the amount of catalyst. 研究結(jié)果表明，隨著催化劑用量增加，反應(yīng)速度提高，PET的特性粘度、羧基含量和熔點(diǎn)均有所提高。 返回 meltingpoint