论证了湍流式粉碎机粉碎物料存在一个经济转速；
Proving that the turbulence mill have a economic rotational speed ;
采用变频调速控制，对风机、水泵类机械进行转速控制来调节流量的方法，对节约能源，提高经济效益具有非常重要意义。
Frequency control the use of fans, water pumps, type of machinery to carry out speed control method to regulate the flow of energy conservation, economic efficiency is very important significance.
为解决高转速下动力与经济性能的下降，提出一种新的气动发动机曲轴连杆机构。
To solve the poor economic and dynamic performance at high engine speed, a new crank shaft mechanism of air powered engine was proposed.
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