...桨的滑流进行数值模拟,常用的方法是基于动量理论的作用盘/激励盘模型[1-4],螺旋桨被近似为一个假想的无厚度作用盘(actuator disk),气流在流经该盘时,会产生一个压强的跳跃.该模型的优点是简单、计算量小.
基于12个网页-相关网页
拖盘也用来把食物包固定在某处，防止它们在太空微重力作用下到处飘浮。
The tray also holds the food packages in place and keeps them from floating away in the microgravity of space.
与星系群其它星系之间相互作用的引力潮可能导致了NGC 3190的旋臂不对称地环绕中心，而星系盘也出现了扭曲。
Gravitational tidal interactions with other members of its group have likely caused the spiral arms of NGC 3190 to appear asymmetric around the center, while the galactic disk also appears warped.
预防作用就在于一个沙拉盘或水果盘。
The power of prevention may lie in a salad bowl or a plate of fruit.
应用推荐