This signal intensity depends on a number of factors. 信号的强弱取决于多种因素。
The proses of the Pre-Qin and Han Dynasties often have the images which judge the strength of vitality and their functional attributes according to the voice. 先秦两汉散文经常出现以声观气事象,根据人的声音判断生命力的强弱及其功能属性。