This paper introduces hydraulic vibration-exciting system for marble moulding machine, and pats forward rational selection method of vibration. parameter for the system controlled by rotary valve.
本文介绍了应用于再造大理石成型机的液压激振系统，并提出了应用转间控制的系统其振动参数的合理选择方法。
Hydraulic pressure process in heating system is coupling, parameter varying, nonlinear, multi-variables process.
供热系统水压过程是一个耦合的、变参数的、非线性的多变量过程。
In order to improve the efficiency of hybrid power system applied in hydraulic excavator, a parameter matching method was developed to optimize the power system.
为了提高液压挖掘机混合动力系统的效率，提出了一种对其动力系统进行优化的参数匹配方法。
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