jackdrill

常见例句

• 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。
• Keywords Deephole drilling;Powder discharging;Counter-cylinder;Diesel jackdrill;
  深孔凿岩;排粉;副气缸;内燃凿岩机;
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