This is a highly tricky exercise because vorticalflow fields act in a complicated (what scientists call nonlinear) manner, making prediction difficult.
这可难了，因为涡流场的变化模式非常复杂(就是科学家所说的非线性变化)，难以预测。
2
Boeing wants to use existing wing and tail control surfaces that shift up and down about 20 degrees in a coordinated fashion to disrupt the vorticalflow.
波音公司则利用现成的机翼与机尾控制面，让它们互相协调、上下移动20度，以扰乱涡流。
3
The development in the application of the methods of non-linear dynamics to the study of vorticalflow is reviewed, and their application to the study of fluid mixing dealt with.