remote control gear with transmission tubing for manual operation; symbols for schematic drawings 用手操作的帶傳輸管的遙控裝置.示意圖符號
the main topic of the thesis is talking about the security services of x-pdm, the realization of the security scheme, and the automatic understanding for electronic circuit schematic drawings, which is the key technology of document management in x-pdm 本文的主要內(nèi)容涉及x-pdm系統(tǒng)的安全服務及其實現(xiàn)方案的設計,以及圖檔管理關鍵技術之電子電路原理圖自動輸入與理解系統(tǒng)的研究。
abstract : on the basis of the practical design experiences and relatedreference literatures, the basic principles, development process, key waveforms, performance features and application points of five new pwm constant current feedback control modes for inverter welders are illustrated and reviewed in the light of their schematic drawings in details 文摘:根據(jù)實際設計工作經(jīng)驗及有關參考文獻,比較詳細地依據(jù)基本工作原理圖說明了逆變焊機用的5種新型pwm恒流調(diào)節(jié)反饋控制模式的基本工作原理、發(fā)展過程、關鍵波形、性能特點及應用要點[13]。