Tan, Li, Haibo Xie, Jianbin Liu, Hanben Chen, and Huayong Yang. 2019. “Research on Influence of Different Types of Orifice on Axial Steady-State Flow Force in Cartridge Proportional Valve”. International Journal of Fluid Power 20 (2):151-76. https://doi.org/10.13052/ijfp1439-9776.2021.