The production technics of aluminium alloy defending fake flower patternsheet, grind technique of flower pattern roller and sheet oxidation technique are studied.
研究了铝合金防伪花纹板材的生产工艺，花纹辊磨制方法，板材表面氧化工艺。
2
Chet is a trap shooter, and a darn good one, and one of the things you do is blast a sheet of paper from 35 yards and look at the pattern to see what it tells you about the gun and yourself.
Chet是一个飞靶射手，打得不错(a darn good one)，你要做的是从35码之外射击一页纸然后看看结果会告诉你枪怎么样或者你的技术如何。
3
Patterned sheet ( embossed sheet ) ?sheet on which a pattern has been impressed on one or both sides by rolling the strip between patterned ( embossing ) rolls.