2. 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。
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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.
军工生产弹类时产生的边角余料和废炸药，过去国内外作销毁处理，造成环境污染和经济损失。
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4. 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.
