With an optional attached gear motor, they are suitable for flow rate regulation in modulating controlled combustion processes.
它具有可选的附加齿轮电机，适合用于调制控制燃烧过程中的流量调节应用。
With an optional attached gear motor, they are suitable for flow rate regulation in modulating controlled combustion processes.
它具有可选的附加齿轮电机，适合用于调制控制燃烧过程中的流量调节应用。
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