精密偶件 meaning in Chinese

precise couple

Quanzhou xinguang machinery co . , ltd is a leading manufacture which is specialized in the three modules for fuel injection system in china
泉州新光机械有限公司是专业生产燃油喷射三对精密偶件的企业。
8 . taking precise plungers of oil pump mouth and bearings produced in a large scale as the objects , practical application and verification of above theoretically research results were made
以大批量生产的油泵油咀柱塞精密偶件和轴承件为对象，对上述理论研究结果进行了实际应用与验证。