Melt volume flow rate (MVR) is one of the important parameters for characterization of flow property of polymers.
熔体体积流动速率（MVR）是表征聚合物流动特性的重要参数之一。
The characterization of pre-curing catalyst show that the pore volume and specific surface area had little change after vulcanization.
预硫化催化剂的表征结果表明，催化剂硫化前后孔容和比表面积变化不大。
Polyimides and Other High Temperature Polymers: Synthesis, Characterization and Applications, Volume 4
高温聚酰亚胺等高分子：合成，表征和应用，卷4。
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