采用电子束直写、步进制模、压印翻制的压印模具生产工艺，其模具的制造是目前面临的难点。
The mold manufacturing is the key part in imprint lithography process, which includes electron beam direct writing, stepping molding, and the conversion from small mold to big mold.
论述了在薄板冲压件上，用变薄翻边冲制小螺纹底孔的工艺、冲模结构、设计与制作技术。
Discuss punching small thread fluted opening technology, die structure, die design and die manufacture technology on thin sheet.
我翻遍了禁书区，甚至看了最可怕的书，教你怎么熬制最恐怖的魔药的那些——都没有！
I've been right through the restricted section and even in the most horrible books, where they tell you how to brew the most gruesome potions — nothing!
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