If you change brands of pellets, do so gradually by adding a few of the new ones to their old pellets, and slowly switching the mixture over.
如果你改变饲料的品牌，这样逐步增加一些新的到它们的旧饲料中，慢慢地交换了混合。
2
Input switching: budget term which means managers can change budget allocations as a result of changing cost pressures over the range of expense accounts.
投入转换：预算术语，指当成本对整个支出帐户的压力发生变化时，经理可以改变预算的分配。
3
The encoder assembly (1) is respectively connected with a change-over switch (2), a combining beam switching control (3), the decoder assemblies (4) and (14), a storage battery (13) and the ground.