信号故障探测仪信号寻纵器signal: n. 1.信号,暗号;信号器。 2.动机,导火线 (fo ...tracing: n. 追踪,追溯,追查;描摹,映写,复写;摹图;映写图, ...instrument: n. 1.仪表,仪器 〔cf. tool, implem ...signal-tracing instrument: 信号跟踪仪器tracing instrument: 描图仪器下载手机词典可随时随地查词查翻译