secondary breaker 二级粉碎机 ; 二级破碎机
DW15HH series conventional circuit breaker is the secondary developed product for the DW15 series conventional circuit breaker.
DW 15hh系列万能式断路器是对大容量DW 15万能式断路器二次开发成功的产品。
It has been proven by tests that the rock breaker is a new practical and economical secondary breaking equipment. The application prospect of the rock breaker will be bright.
研究和试验表明，劈石器是一种新型、实用、低成本的矿岩二次破碎设备，具有广阔的应用前景。
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