計(jì)算題:已知某運(yùn)動(dòng)粘度計(jì)的常數(shù)為0.478mm2/s2,試樣用油在50℃時(shí)的流動(dòng)時(shí)間為:318.0s、322.4s、322.6s、321.0s,求試樣用油的運(yùn)動(dòng)粘度?