The research of heating in selective laser sintering (SLS) of powders mostly focuses on the sintering process, but the research of the preheating process is not sufficient.
对选择性激光烧结(SLS)加热的研究多数集中在烧结过程上，而对预热过程的研究还很不完善。
During laser processing, the heating and cooling process of laser molten pool can be acquired by the numeric model.
通过该计算模型，可以掌握激光加工过程中连续移动激光熔池的加热和冷却规律。
In order to understand the laser melting process, investigations into modelling of heating mechanism initiating the laser melting are necessary.
为了充分了解激光熔化机理，对表面熔化进行模拟研究很有必要。
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