This calibration is usually carried out by employing a double exposure technique in which the diffraction pattern and electron image of a crystal of molybdenum trioxide are successively exposed.是什么意思_This calibration is usually carried out by employing a double exposure technique in which the diffraction pattern and electron image of a crystal of molybdenum trioxide are successively exposed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句