请问Step-Down Switching Regulator 什么意思?谢谢

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请问Step-Down Switching Regulator 什么意思?
谢谢

没有具体语境无法回答,你看：
step-down
adj.减缓的,下降的
switching regulator
nounal phrase（名词性词组）.1.交换调整器;2.开关式稳压器;3.开关调整控制电路;4.调节器
共2*4=8种组合,有好几种都是可以的.

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