常见例句雙語例句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.對KZL-120露天鑿巖鑽車的液壓系統原理、插裝錐閥的應用、推進方式等作了敘述。 返回 drill jumbo