A reference laser beam is added to dual beam symmetric illumination electronic speckle pattern interferometric (ESPI) system and is shared by the two illumination beams.是什么意思_A reference laser beam is added to dual beam symmetric illumination electronic speckle pattern interferometric (ESPI) system and is shared by the two illumination beams.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句