Currently the main methods nondestructively detecting this disorder are optical density method, X-ray method, mass density method and magnetic resonance imaging (MRI) method.是什么意思_Currently the main methods nondestructively detecting this disorder are optical density method, X-ray method, mass density method and magnetic resonance imaging (MRI) method.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句