当专家列举激光浓缩商业化可能带来的危害时，他们常常指向伊朗。
When experts cite possible harm from the commercialization of laser enrichment, they often point to Iran.
本文报道了三种激光作业的危害评价方法和结果，并提出需要采取的防护措施。
Results and methods of hazard evaluation and protection measures for three kinds of laser operation are reported in this paper.
目的：探讨长期从事激光工作的人员是否有心血管系统的职业危害，为安全防护提供参考。
Objective: to explore whether there is occupational harm to cardiovascular system of personnel engaged in long term laser work and offer reference of safety protect.
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