The common faults of S1240 (ELC type) SPC exchange are in user mod ul e, relay module and metering module in daily maintenance work.
在对S1240 (elc型)程控交换机进行日常维护时，常见故障有用户模块、中继模块和计费模块的故障。
These components are installed between the customer supplied regulation and metering station and the gas fuel flow meter installed just prior to the fuel gas module.
这些部件安装于用户提供的调压计量站和安装在燃气组件前的气体燃料流量计之间。
These components are installed between the customer supplied regulation and metering station and the gas fuel flow meter installed just prior to the fuel gas module.
这些部件安装于用户提供的调压计量站和安装在燃气组件前的气体燃料流量计之间。
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