lowbelln.小铃lowadj.低的；少的；低落的；低声的；卑劣的；低等的adv.低地；低声地；低下地；廉价地n.低水平；低价；低谷v.哞哞叫low C/N ratio wastewater低碳比废水low voltage electrophoresis低压电泳low-dimensional structure低维形貌结构low pressure delivery gauge低压出水口表low-pass matching circuit低通匹配电路low-pressure metamorphism低压变质作用Low Altitude Defense System低空防御系统low-temperature logistics低温物流low - pass filter circuit低通滤波电路low-temperature warehouse低温仓

1. Dynamic characteristics of the portal frame are also identified from the WPT of low frequency signals.
   低频的部分则可以进行门形构架的系统识别。