The variations of death rate for cancers of workers in an ordnancefactory in 42 years based on long term registration data were analyzed.
采用长期肿瘤死亡登记资料,分析了某兵工厂42年职工肿瘤死亡率的变化。
3
In the past, the residues and waste explosives from ordnancefactory in the fabrication of home-made bombs are disposed of by burning, which resulted in environmental pollution and economic losses.