→
→
→
→
→
3,0,-|-2|,- ,1.5,-1
+15,-2,+5,-1,+10,-3,-2,+12,+4,-5,+6.
标准质量的差 | | | | 0 | 2 | | 3 |
箱数 | 1 | 3 | 2 | 2 | 2 | 4 | 1 |