For the forcedcirculation system, to avoid the excessive values of circulation water dynamic, every water cooling tube must be mounted throttle plate in the design.
对于强制循环系统，为了避免循环水动力的多值性，设计均要求在每一根水冷壁管设置节流孔板。
2
Since primary transformer of electric locomotive adopts the forced oil-circulationcooling method, its heating computation is rather complicated and difficult.