In order to reduce the disturbance energy loss in the process of inlet diversion and outlet jet flow of parallel fan station, taking the parallel connection of two fans as an example, a high-efficiency and low resistance parallel station structure improvement mode is proposed, and the ventilation efficiency and local resistance coefficient formulas
Balance and core stabilization exercises have often been associated with improved athlete performance and/or decreased incidence of injuries.While these exercises seem to be efficient in the prevention of injuries, there is insufficient evidence regarding their role in sport-specific performance and related functional movements.The aim of this scop
In order to improve the accuracy of recommendation, especially the matrix score of personalized recommendation technology is too spars, a new recommendation algorithm was proposed.The advantages of this algorithm were mainly embodied Metal Wallet Gift Box in the following aspects.Firstly, the improved algorithm with RFM model was used to select the