自流灌区的自然低水头微灌技术，既节水又节能，但因自然水头低导致微灌系统灌溉均匀性差。
The technology of natural low-head irrigation has the advantage of water-saving and energy-saving, but its uniformity is poor for the low pressure.
针对传统气氛炉的温度均匀性差、自动化程度低、冷却速度慢等一系列问题提出全面优化设计方案，并取得了良好的效果。
Comprehensively optimal design plans for the conventional controlled atmosphere furnace were proposed to counter its bad temperature uniformity, low automatic control level and low cooling speed.
果蔬差压通风预冷包装箱的开孔大小及包装箱两侧的压差是影响预冷速度、冷却均匀性的重要参数。
The vent hole size and the pressure drop are the important parameters which affect cooling rate and cooling uniformity in pressure pre-cooling of fruit and vegetable.
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