Ruling with grating ruling engine is still the most important means for the fabrication of master grating. Hence, it is valuable to track the state-of-the-art of the diffraction grating ruling engine.
采用高精度的衍射光栅刻划机刻划依然是制作高质量母光栅最重要的手段，因此，跟踪世界光栅刻划机的最新技术进展具有重要的现实意义。
Even if marketers master social media without coming across as clumsy, grating or intrusive, there will surely be a limit to how much advertising will shift to the platforms.
即使营销人员可以精明且无误的运用社会化媒体，将多少广告转投社会化媒体平台仍需有个限制。
The technology to make a large area master with the grating of optically variable device (OVD) is role in holographic image embossing.
制作具有光变图像（OVD）光栅条纹的大面积全息原版，是激光图像无油墨印刷的核心技术之一。
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