1、qQA),(zyxft ),(zyxft )(xft ntnttgradn0lim)(tdQdAx 气体液体非金属固体金属固体tdQdAx tQdAx 210bttQdxAdt )(21ttAbQ)(21ttAbQ阻力推动力RtAbtt21bRARtbtAQq123QQQQAbtt1121Abtt2232Abtt334314312123ttQbbbAAA总阻力总推动力123QQQQAbtt1121Abtt2232Abtt3343312123tttRRR123123:tttRRR1QQ1211ttbA14312123ttbbbAAA02812.7tCtdQdAx 2dAArL(2)tQrLx 1
2、2212()lnL ttQrr12212()lnL ttQrr1221ln2tttrRrL21ln2rrRL12ttQbA1221mttQrrA1221ln2ttQrrL1221mttQrrA21212lnmrrALrr2121lnmrrrrr2mmALr212122112222lnln2mrrLrLrALrLrrLr2121lnAAAA1221mttQrrA2121lnmrrrrr2mmALr2121lnmAAAAA122mAAALrrLrrLrrtt334223112412ln2ln2ln12123ttQRRR14324321112233mmmttrrrrrrAAA1221mttQrrA01110tC 0210tC211000.1rrmmm221210.428lnmAAAmAA21220.03 10.188ArLm /2222(0.030.1) 10.816Ar Lm 35.95/QWm tdQdAx 气体液体非金属固体金属固体12ttQbA14312123ttQbbbAAA1221mttQrrA2121lnmrrrrr2mmALr2121lnmAAAAA
