Thirty years ago, half the developing world lived in extreme poverty today, a quarter. Now, a much smaller share of children are malnourished and at risk of early death. And access to modern infrastructure is much more widespread. Critical to the progress: rapid economic growth driven by techn...
与传统扬声器相比,NXT平板隐形音响的音质更通透纯净、高音清晰细腻。另外,由于NXT隐形音响取消了传统扬声器的箱体和障板,因而“声染”现象被彻底杜绝,所以声音表现得更准确,更柔顺自然。平板扬声器的发声是从整个平面均匀发出的,而非传统扬声器的点声源,其声音是一个发散的声场,声波的扩散是漫射型的。因此,NXT隐形音响不...