ghost free

基本解釋

I play fingers with a soul-free ghost, discussing roots of life.
我和野鬼劃拳，討論人生的一些根本問(wèn)題。
Second, the free-boundary is handled by using combination of the zero-velocity method with the general ghost-image method and fourth-order difference format is used in free-boundary.
然后采用將零速度法和廣義虛像法相結(jié)合的方法來(lái)處理自由邊界，并在自由邊界上采用四階精度差分格式；