粘度单位1P=100CP=0.1N▪s/m/ananas/latex/p/129
举一反三
- 动力粘性系数μ=1.5×10N▪s/m的流体沿平板壁面流动,测得离壁面y(m)处的速度分布为u=1-200(0.05-y),在y=5mm处的粘性切应力为τ= N/m/ananas/latex/p/725/ananas/latex/p/129/ananas/latex/p/129/ananas/latex/p/129
- 若He=36-0.02V (单位He--m ,V-- m/h),则式中36的单位是_________ ,0.02单位是_____________。/ananas/latex/p/129/ananas/latex/p/143
- 设A,B (m≠n),则BA不是m阶方阵./ananas/latex/p/1193490/ananas/latex/p/1193503
- 若X~N(μ,σ),则EX的值为( )/ananas/latex/p/129
- A、B两点,=115.032m,=114.729m,则=m。/ananas/latex/p/3054/ananas/latex/p/3055/ananas/latex/p/3196