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针对当前单缸手持式内燃凿岩机深孔凿岩存在的问题，研制了ＹＮＦ３０型带副缸式内燃凿岩机。介绍了其结构特点、基本参数和性能，并与同类产品进行了比较。
In view of the existing problems of deep hole drilling with single-cylinder hand-held internal combustion rock drill, YNF30 belt-cylinder internal combustion rock drill has been developed. The structural characteristics, basic parameters and performance are introduced and compared with similar products.