基本解释[能源科学技术]斗式挖沟机词组短语短语bucket t trencher 斗式挖沟机bucket wheel trencher [机]斗轮式挖沟机chain bucket trencher [机]链斗式挖沟机;链斗式挖沟机multi -bucket trencher 多斗式挖沟机endless -bucket trencher 轮式挖沟机bucket trencher更多词组专业释义能源科学技术斗式挖沟机