cardinal axis meaning in English

铰轴
主轴

Since 2003 , aiming at some technical problems met in harbor industry , the company persists in researching and developing new technologies and products , thereinto , high - hardness wearing liner plate used by bulk cargo hopper and maintenance free cardinal axis with cover items have been confirmed to be successful in trial - manufacturing by consumers and then achieve national patents as well
2003年以来，公司针对港口行业所遇到的一些技术难题，执著研发新技术新产品，其中散货漏斗使用的高硬度耐磨衬板免维护带套铰轴项目，经过长时间生产实验，已经被用户确认试制成功，并取得国家专利。