YNF30 Jackdrill with caunter-cylinder is developed with the aim at resolving the problem existing in the deep-hole drilling by single-cylinder hand diesel jackdrill.
针对当前单缸手持
内燃
机深
存在的问题，研制了YNF30型带副缸内燃机。
机YNF30 Jackdrill with caunter-cylinder is developed with the aim at resolving the problem existing in the deep-hole drilling by single-cylinder hand diesel jackdrill.
针对当前单缸手持内燃机深存在的问题，研制了YNF30型带副缸内燃机。
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