单词	趋势记录
释义	趋势记录trend record
随便看	loss of signal loss of signal detection loss of signal--los loss of signal strength loss of signal 信号丢失 loss of signal，los loss of signification loss of social position loss of specie loss of speech loss of steam and water loss of synchronism loss of synchronism protection loss of sysnchronism loss of teeth loss of tension loss of time loss of use loss of vacuum loss of validity of verification loss of voice loss of voltage loss-of-voltage protection loss of voyage loss of water level