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relay pneumatic bellows：继电器气动波纹箱,继电器气动伸缩膜盒

relay plugboard 继电器插座板 | relay pneumatic bellows 继电器气动波纹箱,继电器气动伸缩膜盒 | relay point 中继站

current relay：距离保护

电流保护:Distance Relay | 距离保护:Current Relay | 微机保护:computer relay protection

relay driving spring：继电器驱动弹簧

relay driver ==> 继电器驱动器=>補助継電器駆動回路 | relay driving spring ==> 继电器驱动弹簧 | relay drop ==> 继电器吊牌

frame relay assembler / disassembler,FRAD：讯框中继组合拆卸器

"讯框中继接取装置","frame relay access device" | "讯框中继组合拆卸器","frame relay assembler / disassembler,FRAD" | "讯框中继组译解译器","frame relay assembler dissembler"

frequency relay：频率继电器

BPW 功率继电器 Power relay | BF 频率继电器 Frequency relay | BPS 压力继电器 Pressure relay

frequency relay：频率替续器

BPW 功率替续器 Power relay | BF 频率替续器 Frequency relay | BPS 压力替续器 Pressure relay

difference frequency relay：差周率继电器

辅助继电器 auxiliary relay | 差周率继电器 difference frequency relay | 极化继电器 polarized relay

relay fritting：继电器触点溶合

relay friction effect 继电器摩擦效应 | relay fritting 继电器触点溶合 | relay front contact 继电器前触点

balanced beam type ground distance relay：平衡杆式接地远距继电器

balanced beam type distance relay 平衡杆式远距继电器 | balanced beam type ground distance relay 平衡杆式接地远距继电器 | balanced beam type highspeed impendance relay 平衡杆式高速阻抗继电器

Fault component impedance relay：突变量距离继电器

继电保护整定计算:Protective Relay Setting Calculation | 突变量距离继电器:Fault component impedance relay | 电子式过载保护继电器:electronic over-load protective relay

air ventilator：通风管

air purifier 空气滤清剂 | air ventilator 通风管 | air-bleed 空气分泄器

sound motion picture, talkie：有声电影

silent cinema, silent films 无声电影 | sound motion picture, talkie 有声电影 | cinemascope, CinemaScope 西涅玛斯科普型立体声宽银幕电影,变 形镜头式宽银幕电影