The effects of h-BN content on the fracture behavior and toughness of the h-BN/Si3N4 ceramic composites were investigated.是什么意思_The effects of h-BN content on the fracture behavior and toughness of the h-BN/Si3N4 ceramic composites were investigated.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句