n. [机] 凿岩机
... jackbird需上油的接头 jackdrill凿岩机 jacketcollar衬套接头 ...
[机]凿岩机
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。