常见例句双语例句This paper describes the principle of hydraulic system, application of plug-in cone valves and press's advance mode, etc. of open-pit drill jumbo model KZL-120.对KZL-120露天凿岩钻车的液压系统原理、插装锥阀的应用、推进方式等作了叙述。 返回 drill jumbo