This paper introduced the type, structure, function, and theory of the new tight-lock coupler applying to city track traffic.
介绍了新型城轨用密接式车钩的型式、结构、功能和原理，论述了强度、运动学分析、制造工艺等关键技术研究和试验情况。
Tight-lock coupler casting yield can be increased by 9% and the consumption of raw materials reduced and the economic benefits increased.
通过本课题研究，密接式车钩铸件出品率可以提高9%，降低了原料消耗，提高了工厂的经济效益。
Tight-lock coupler casting yield can be increased by 9% and the consumption of raw materials reduced and the economic benefits increased.
通过本课题研究，密接式车钩铸件出品率可以提高9%，降低了原料消耗，提高了工厂的经济效益。
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