trenchn.沟;沟渠;战壕v.挖沟;侵占
trenching plough挖沟犁
trench excavater挖壕沟机
trench refilling沟槽还土
trench capacitor沟槽电容器
trench compactor蛙式打夯机
trenching method暂沟开采
trench excavator挖(壕)沟机
trenching bucket挖沟铲斗
trench excavation挖电缆沟
trench shuttering堑沟护板