基本解釋Estimated Time Out of Commission 預計退役時間； abbr.；=expected total operating cost 預期縂操作費用同根派生 etoc相關詞英漢例句A determination rnethod of Etoc in Mosquitourepellent mat with gas chrornatography was established.The quantitative analysis of etoc was conducted by GC using FID and internal standard method. 敘述了採用氣相色譜法，以FID檢測器和內(nèi)標法定量測定電熱蚊香片中益多尅的含量。etoc更多例句