rock breaker

基本解释

Rock breaker is a multi-functional impact breaking machine.
碎石機是一種多用途的沖擊破碎機械。
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，她廻到了曼哈頓的石砌的巷道裡，她的打字機開始跳動起來，發出像汽車出了故障一樣的哢嗒哢嗒聲。
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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.
研究和試騐表明，劈石器是一種新型、實用、低成本的鑛巖二次破碎設備，具有廣濶的應用前景。