调幅讯号之频谱为一半强度基频讯号之频谱分别正负位移一射频或载波之频率。
The spectrum of amplitude modulated signal are two half magnitude spectrums of base band signal positive and negative shifted by a carrier or R. F. frequency.
为了研究金属微格子材料的的强度，研究小组把材料压缩到它厚度的一半。
To study the strength of the metallic micro-lattices the team compressed them until they were half as thick.
心率下降了近一半，但对血压和心跳强度没有产生太大的影响。
Heart rates also fell by nearly half without much effect on blood pressure or the strength of the heart-beat.
应用推荐