Unfortunately, the economic crisis has slowed US manufacturing production, sending home thousands of US workers and glutting the manufacturing workforce. 不幸的是,经济危机已经放缓,美国制造业生产,派遣数千名美国工人家庭,并争取用户的制造业工人。
The Technique of Manufacturing Ceramic Glutting in the Development of Automobile Engine's Aluminium Alloy Rocker Arm 陶瓷镶块制造技术的应用研究
Study on Low Surface Roughness Grinding of Silicon Nitride Ceramic Glutting 氮化硅陶瓷镶块低粗糙度磨削的研究