检测中心 | 再制造工厂 | |||
E1 | E2 | E3 | E4 | |
X1 | 2 | 5 | 3 | 4 |
X2 | 1 | 4 | 2 | 2 |
X3 | 3 | 2 | 6 | 5 |
X4 | 2 | 6 | 1 | 1 |
X5 | 4 | 2 | 6 | 7 |