And air-entraining agent increases impermeability of hybrid fiber reinforced concrete. 引气剂有助于提高混杂纤维混凝土的抗渗性。
This paper introduces the technology and the properties of automotive electric transducer manufactured by short hybrid fiber reinforced phenolic injection plastics. 介绍短切混杂纤维增强酚醛注射料注射成型汽车电器换向器的工艺和制品性能。
