Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/8d55797f221b7b95d6eea20e0034b750.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 jumbo drill例句_jumbo drill英汉例句_jumbo drill双解例句_按摩法牛津词典
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。