An abbreviation for breathing apparatus set and is a form of personal protective equipment that is worn to supply uncontaminated air through a face mask or mouthpiece. It is used by personnel working in hazardous environments.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。