For conifers which do not form an abscission layer at the base of the cone, shakers have been partially or completely unsuccessful.
对于球果基部不能形成脱离层的针叶树，摇树机的作用不大，或者完全不起作用。
2
According to the boundary layer character in reentry wake of hypersonic blunt cone body, this paper presents a local similar solution for hypersonic wake.
依据钝锥体再入远尾迹流动的边界层特征，从边界层方程出发得到了高超声速远尾迹流动的拟相似性解。
3
The mechanism of the effect is that the transition induced normal force arise when the boundary layer transition appear on the slender cone.