In order to predict the hydrodynamic performance of propeller with boss cap fins, CFD software was used to calculate the its open water performance.
为了预报毂帽鳍的水动力性能，采用计算流体力学软件对粘性流场中毂帽鳍的敞水性能进行计算研究。
Apple also admitted that the formula it used to calculate signal strength in its new iPhone 4 and other iPhone models, was "totally wrong", and vowed to remedy the situation with free software.
苹果也承认其用来测算iPhone 4新款手机以及其他款iPhone手机讯号强度的程序“完全错误”，并许诺用免费软件来弥补现在的状况。
The special software of the urea production was used to simulate and calculate the urea system, and the problems in production were found out. Then the optimization plan was made and carried out.
利用专用尿素生产计算模拟软件，通过对大尿素装置的分析与计算，找出生产中存在的问题，提出优化方案并予以实施。
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