短語詞組短語pulse e length modulation 脈沖持續(xù)時間燈pulse length modulation principle 脈寬調(diào)制原理Pulse Length Modulation PLM 脈沖長度調(diào)制length -pulse modulation 脈沖長度調(diào)變fixed -length digital pulse interval modulation 定長數(shù)字脈沖間隔調(diào)制 返回 pulse length modulation