每个纸箱可以放20个pcb 中译英
问题描述：
每个纸箱可以放20个pcb 中译英
答
Each carton can hold up to 20 PCBs.
答
Every carton can contain 20 pcb.
答
20 piece pcb could be contained in each carton.
you can pack 20 piece pcb in a carton.