velocity pattern的用法和樣例：
例句
- The viscosity of the fluid has no direct effect on the velocity profile.
流體的粘度對速度場沒有直接影響。 - And to update the velocity to the new mesh efficiently but still divergence free is still a problem.
另外，將不可壓的速度場從舊網格更新到新網格上，仍然要滿足不可壓條件是比較困難的。 - The REE distribution pattern of the Xihu lake is similar to that of andesite.
西湖沉積物稀土分佈模式與安山岩相似。
