具有外形尺寸小、重量轻、通孔和转速适中、性能可靠等特点，各项指标均能满足一般数控车床的需要。
They are with feature compact construction, light weight, moderate center hole and speed, reliable performance, and meet requirements of nc turning lathes.
为了获得更高性能的TFT - LCD面板，在光刻时保证精细的图形成像十分重要，其中，如何制作出尺寸更小的通孔图形是主要的问题之一。
To make a TFT-LCD panel which has higher performance, fine patterning process of photolithography is needed. Making smaller via pattern is one of main issue for fine patter - ning.
在玻璃片上制作精确尺寸的45通孔，并非易事。
It's very difficult to make a hole on the wafer with a 45-degree Angle exactly.
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