Informal Denoting a system or component that is operational and in service and either busy or idle; it has passed all its tests and is in a condition during which random faults may be predicted to give an MTBF.
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。