本文叙述了彩色显像管三枪“目玉”缺陷的主要成因，找出消除办法，取得显著成效。
In this paper, the main causes of the defect black dot on the surface of cathode in CPTs are described in detail , some measures are adopted and the apparent results are achieved.
段玉裁的方言研究注重目验和历时、共时的比较，其材料及方法可供汉语史和现代汉语方言研究参考。
Du Yucai's dialect study paid attention to the comparison. Its materials and methods were for reference to Chinesehistory and modern Chinese dialect study.
回首往昔，生活的点滴历历在目，满心的无奈玉惆怅也是无处可放，还是挥挥手吧，带走仍不下的，明天去开垦自己的田地吧…
Looking back on the past, bit by bit life vividly, full of frustration of the jade is also nowhere to put melancholy, or wave it, not taken away under tomorrow to own the land reclaimed it …
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