Research Article

Optimization of Preventive Maintenance and Replacement Strategies for Nonrenewing Two-Dimensional Warranty Products Experiencing Degradation and External Shocks

Table 9

The minimal mean cost for various .

0.10.30.50.70.9

1.81.81.81.61.6
1.61.61.61.61.6
80.457779.517078.576277.598576.5933