The desensitized explosive PETN film was prepared by physical vapour deposition(PVD) technology,and SEM was used to analyze the microstructure and grain size of PETN film.是什么意思_The desensitized explosive PETN film was prepared by physical vapour deposition(PVD) technology,and SEM was used to analyze the microstructure and grain size of PETN film.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句