Study on the resistance characteristics and rotation efficiency.
起旋器的阻力特性及起旋效率研究。
The intermediate demister shapes air flow swirl generated by impeller rotation to get bigger particle and improve the arresting efficiency of the next filter screen.
中间除雾装置将叶轮旋转而成的气流旋涡整形，使得粒子进一步变大，从而提高下一个滤网的捕集效率。
The result showed, comparing with sole cropping, the land use efficiency of sequential cropping, row cropping, crop rotation raised by 62%, 38% and 21%.
结果表明，与单作一熟农田相比，复种、间作及轮作农田土地利用效率分别提高62%、38%和21%；
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