The technology to make a large area master with the grating of optically variable device (OVD) is role in holographic image embossing.是什么意思_The technology to make a large area master with the grating of optically variable device (OVD) is role in holographic image embossing.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句