... relayandquickreleasevalve(制动系)继动快放阀 relayblock继电器盒 relaycenter继电器中心(带多个继电器及熔断丝) ...
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加热器电路接地线直接连接到地面，加热器电路电源线也直接从点火电路或继电器盒处提供。
The heater circuit power wire is supplied directly from the ignition circuit or a relay and the heater circuit ground is connected directly to the ground plane.
介绍宇通客车电涡流缓速器手控开关、速度控制开关、气压控制开关、继电器盒等故障的检测方法。
The authors introduce the troubles inspection methods of the manual control switch, speed control switch, gas-pressure control switch and relay box of electromagnetic retarders used in Yutong coaches.
飞机继电器盒长期以来一直采用人工方法进行检测，其检测精度和效率已不能满足现代飞机的使用要求。
The relay box has long been checked by manual work. Its accuracy and efficiency can't meet the requirement of the modern aircraft.
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