提出了功放系统的整体设计思路，分别设计了恒流源电路与交流放大电路；
The overall design method of the power supply is put forward, constant-current source circuit and AC source circuit are developed separately;
单机家庭影院系统，就是以DVD播放机为基础，将功放系统、收音系统有效整合为一体的多功能消费电子产品。
Home Theater in a Box (HTiB) is a kind of consumer electronics that is based on DVD player, and integrate the amplifier system, radio system into one product.
术语“效率”是指扬声器系统将电能（功放的推力）转化为声音输出的能力。
The term "efficiency" refers to the ability of a speaker system to convert electrical energy (power from the amplifier) into acoustic output.
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