rock breaker

基本解释

Rock breaker is a multi-functional impact breaking machine.
碎石机是一种多用途的冲击破碎机械。
But soon she came swiftly back to the rock-bound lanes of Manhattan, and the typewriter began to rattle and jump like a strike- breaker's motor-car.
但很快，她回到了曼哈顿的石砌的巷道里，她的打字机开始跳动起来，发出像汽车出了故障一样的咔嗒咔嗒声。
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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。