常見例句雙語(yǔ)例句This paper designed a new type of muffler for pneumatic rock drill with the theory of impedance.利用阻抗消聲原理為氣動(dòng)鑿巖機(jī)設(shè)計(jì)了一種新型的消聲罩。Finally, based on the theories and methods presented, a new independently-rotated valveless pneumatic rock drill was designed.最后，以本文提供的理論與方法，設(shè)計(jì)出了一臺(tái)新型無(wú)閥氣動(dòng)獨(dú)立回轉(zhuǎn)鑿巖機(jī)。This paper analysed the noise characteristic of pneumatic rock drill stell. Introducing the harness method of pneumatic rock drill stell noise.對(duì)氣動(dòng)鑿巖機(jī)釬桿產(chǎn)生的噪聲特性進(jìn)行了分析研究，介紹了釬桿噪聲的治理方法。 返回 pneumatic rock drill