فهرس المقالات and Failure Rate are all terms that are used to describe the Accessibility حرية الوصول المقاله صفحة الملخص نص كامل 1 - Analysis of Mean Time to System Failure and Availability of a System with Cold Standby Unit Muktar Umar Danjuma Bashir Yusuf U.A. Ali 10.30495/jiei.2022.1944196.1175