油箱的主要功能是充当储藏油液的容器。如果设计得当,它们也是油液调节装置:它们不仅提供油液去满足执行器伸缩时变化的需要,同时还能为下一工作循环准备油液。 The main function of the tank is to serve as a reservoir for storing oil. They are also oil-regulating devices if properly designed: they not only provide oil to meet the changing needs of the actuator during telescoping, but they also prepare the fluid for the next working cycle.