Thus the difficulties of discontinuous velocity gradient and the stress singularity at the exit point are avoided, and the expense of computation is reduced.
这样回避了速度梯度间断的困难，缓和了出口处应力奇性引起的矛盾，同时又减少了计算量。
2
Five zones were separated by improved discontinuous sucrose gradient centrifugation.
用改进的不连续蔗糖密度梯度离心法分离到五条带。
3
Objective To establish an rapid and simple discontinuous density gradient method for purification of islet cells from rat pancreas.