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。

youdao

His elitist aesthetics and patrician diction supported a populist ethos that celebrated excellence in carpentry and art-making alike, and hoped to play down the role of money in ruling everything, a shaky position to maintain at any time and maybe impossible to duplicate by anyone brave enough to emulate his example.

WSJ: Robert Hughes | The Most Feared Art Critic of His Time? | By Richard B. Woodward