特设下吹风管及环流排风功能，保证塑料干燥温度均匀，提高干燥效率。
Downward blowing and circumfluent hot - air assures even drying and high efficiency.
同一吹风比下，主流速度较高的，平均效率及平均换热系数也较高。
Under the constant blow ratio, the higher the mainstream velocity is, the higher the average effectiveness and average heat transfer coefficient are.
国内螺旋吹风式速冻机与国外相比效率低下，其中料口严重跑冷是主要原因之一。
Compared with foreign equipments, those of our domestic are more inefficient, the mess and heat transfer at the entrance and exit is one of the main causes of the energy loss.
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