求翻译：3. Airpak软件在网格过多时不能调用fluent进行计算，在大空间建筑模拟中由于体积较大，需要放大网格尺寸，为了保证计算准确，需对风口进行局部加密网格。是什么意思？

3. Airpak software to call fluent in the grid too much can not be calculated in the simulation of large space buildings are large, the need to enlarge the mesh size in order to ensure the accurate calculation of required local refinement mesh on the vent.

. * 3 Airpak software is excessive in the grid will be unable to call for the calculation, and fluent in the space simulation, in building the larger, you need to zoom in, size of the grid computing in order to guarantee accurate, you will need to make a partial encryption outlets grid.

正在翻译，请等待...

3. Airpak software fluent cannot be called when the grid is evaluated in simulation of large-space buildings as large, need to enlarge the grid size, accurate calculation, required on the outlet for local refinement grid.

3. The Airpak software excessively are many when the grid cannot transfer fluent to carry on the computation, in big spatial construction simulation because the volume is big, needs to enlarge the grid size, in order to guarantee the computation is accurate, must carry on the partial encryption grid