描圖儀器tracing: n. 追蹤,追溯,追查;描摹,映寫,復(fù)寫;摹圖;映寫圖, ...instrument: n. 1.儀表,儀器 〔cf. tool, implem ...signal tracing instrument: 信號故障探測儀; 信號尋縱器signal-tracing instrument: 信號跟蹤儀器instrument steam tracing hook-up: 儀表蒸汽伴熱管連接圖下載手機詞典可隨時隨地查詞查翻譯