Saturated steam and cooling water can be inputted in the empty roller to adjust speed of roller.

辊筒内部为空心，可以根据使用要求，通入蒸汽或冷却水，用来调节辊筒的温度。

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Saturated steam and cooling water can be inputted in the empty roller to adjust speed of roller.

辊筒内部为空心，可以根据使用要求，通入蒸汽或冷却水，用来调节辊筒的温度。

youdao