空線 的英文怎麼說
中文拼音 [kōngxiàn]
空線
英文
disengaged line; dead line; [電學] idle wire; free line; idle line空線信號 [訊] free line signal-
Overhead lines - requirements and tests for stockbridge type aeolian vibration dampers
架空線.架空線型風振減振器的要求和測試Self supporting telecommunication aerial cables on overhead power lines above 1 kv vde - specification
電壓大於1kv的電力架空線的載波通信高空電纜vde -規Overhead lines ; clevis caps for insulators
架空線路.絕緣子用u形夾帽Full tension compression joints, for copper conductors, for overhead lines
架空線路用銅導線的全拉力壓制接頭Full tension compression joints, for acsr - conductors, for overhead lines
架空線路用acsr導線的全拉力壓制接頭Full tension compression joints, for aluminium - conductors, for overhead lines
架空線路用鋁導線的全拉力壓制接頭Line tapes for stranded copper conductors and solid ones
第2部分:電力架空線用絞合銅導線和實心銅導線用絕緣Insulators string for overhead lines with a nomina voltage above 1000v - ac power arc tests method
標稱電壓高於1000b架空線路絕緣子串工頻電弧試驗方法Application guide of composite insulators for ac overhand lines with a nominal voltage over 1000v
標稱電壓高於1000v交流架空線路用復合絕緣子使用導則Fixed railway installations. equipment for overhead telecommunication and signalling lines. reinforced concrete socles
鐵路固定設備.通信和信號線路架空線用設備.鋼筋混凝土製管座This thesis built the models computing the working frequency over - voltage " operation over - voltage for 220kv fugai transmission line, calculates and analyzes working frequency over - voltage " operation over - voltage using emtp program and provides reasonable protection measures for the transmission line. furthermore, regulations method, traveling wave method and striking distance method are used to study and compare lightning - enduring capabilities of different types of pole in power transmission lines aiming at the fact that the lightning strike switching rate of 220kv fugai line is higher
本文分別建立了計算220kv復蓋線路的工頻電壓升高及操作過電壓的計算模型，利用emtp程序對220kv復蓋線路工頻電壓升高、投切空線過電壓、投切空變過電壓、單相故障過電壓進行計算分析，並提出合理的防護措施。Telecommunication and power current overhead lines below 1 kv ; tie bar, wall plate, lifting eye nut
1kv以下通信線路和電力架空線.系桿.墻板和吊耳螺母Fixed railway equipment. material for telecommunication and signalling overhead lines. rectangular tie bars
鐵路固定設備.通信和信號裝置架空線路器材.矩形橫梁Fixed railway equipment. material for telecommunication and signalling overhead lines. trapezoidal tie bar
鐵路固定設備.通訊和信號裝置架空線路用器材.梯形軌距桿Bt insulators and fittings for overhead lines. metal fittings. pole top cross arm
架空線路用絕緣子和配件.金屬配件.桿頂橫向臂The trolley bus picks up current from an overhead wire.
無軌電車的電能是通過架空線供給的。Standard specification for bronze trolley wire
青銅制電車架空線的標準規范Covered trolley wire systems
電車用絕緣架空線系統Standard specification for figure - 9 deep - grooved and figure - 8 copper trolly wire for industrial haulage
工業運輸用9號深槽銅及8號銅制電車架空線的標準規范We developed the power system of electric drill based on dc - ac. the system use the technique of spwm frequency cowersation control. it changed th d. c provided by trolly wire of d. c motor into stable a. c adopted igbt and driving circuit adopted high speed module of exb840
針對當前我國煤礦電鉆電源的使用現狀，提出研製dc - ac變換的電鉆電源系統，該電源系統直接利用spwm變頻控制技術，將井下直流電機車的架空線所提供的直流電轉變成頻率是50hz的1 . 27v的穩定交流電。分享友人