激光第一次作此用途是加工硬度很高的材料，如钻石，或非常柔软的材料，例如婴儿奶瓶的奶嘴。
The first lasers to earn a wage did so by machining very hard materials, such as diamonds, or very soft ones, for example baby-bottle teats.
对比普通激光加工，超短脉冲和短波长对各种材料的优势作用日趋显现。
In comparison with ordinary laser processing, the advantages of ultrashort pulse and short wave to all kinds of materials are presented.
由于激光与材料相互作用的复杂性，使得小孔加工质量很难控制。
The machining quality of the hole is difficult to control because of the interactional complexity between laser and material.
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