The importance of welding safety training was introduced. Dangerous and harmful factors of welding operation were described.
介绍了焊接安全生产培训的重要意义，阐述了焊接作业的危险因素和有害因素。
Yellow phosphorus production enterprise may control these dangerous materials and harmful factors to prevent production accident.
黄磷生产企业可以通过控制这些危险物质和有害因素，防止生产事故的发生。
The paper analyzes the major dangerous factors in the exploding process according to the sensitivity of explosive, electricity induced early burst and the harmful gas produced in explosion.
该文从炸药的感度、电感应引起早爆、爆炸产生的有害气体等三个方面，分析了爆破过程中的主要不安全因素。
The scientific research and production process of aerospace industry involves many dangerous harmful factors caused hazard points of various types, the amount is large and complex situation.
航天工业的科研生产过程中涉及众多危险有害因素，造成了危险点的数量大，类型多样，情况复杂的局面。
The scientific research and production process of aerospace industry involves many dangerous harmful factors caused hazard points of various types, the amount is large and complex situation.
航天工业的科研生产过程中涉及众多危险有害因素，造成了危险点的数量大，类型多样，情况复杂的局面。
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