The composite material(BNf-SiO_2)was made by adding boron nitride fiber into the basalsilica. The thermal expansion characteristics of the composite material(BNf-SiO_2)are studiedin this paper.是什么意思_The composite material(BNf-SiO_2)was made by adding boron nitride fiber into the basalsilica. The thermal expansion characteristics of the composite material(BNf-SiO_2)are studiedin this paper.在线翻译_英语_读音_用法_例句