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。
For the forced circulation system, to avoid the excessive values of circulation water dynamic, every water cooling tube must be mounted throttle plate in the design.
烘干机利用远红外线使油墨的烘干效果优良，采用比例控制新概念，设有强制热风循环系统。
The drying conveyor dries the printing ink well by making use of the infrared, it is with the new concept of proportion control, with strong heating wind circle system.
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