本发明创造属于石油机械，尤其是节能抽油机。
The present invention belongs to petroleum mechanical field, especially energy saving oil pumping machine.
对绿色设计在石油机械中的应用做了初步研究。
The green-designed petroleum machinery assessment system has been initially established.
同时，还可生产石油机械、阀门、轻纺机械等产品。
At the same time, also the production of petroleum machinery, valves, textile machinery and other products.
应用推荐