A small unit on the chest of an astronaut's life-support system or extravehicular mobility unit (see extravehicular activity). It has displays and controls for water and electrical supplies.
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。