As the ponds are quite small and not very deep, it has been proposed that a single grab dredger be used for the operation.
由于池塘面积较小而且水不太深，已建议在操作时使用单抓斗挖泥机。
self-propelled grab dredger
自动推进式抓斗挖泥船
4 For dredging works, only mechanical dredgers with bucket-type closed-grabs shall be used for the dredging of river bed or ponds.
进行挖泥工程时，只可使用密封抓斗式的机械挖泥机，以挖掘河床或塘底的淤泥。
Where tight dredging depth tolerances are required to dredge contaminated materials the bucket-type closed-grab dredger shall incorporate a visor.
在挖掘受污染物料时，若严格规定了挖泥深度容限，则密封抓斗式的挖泥机应设置一个护罩。
bucket wheel suction dredger
斗轮铲式抽吸挖泥机
Any of various devices with two hinged jaws, used for dredging or digging.
抓斗，挖斗任何一种具有两个铰接夹爪用来挖泥或铲土的设备
bucket ladder dredger
链斗挖泥船斗式采泥器
A barge or boat equipped with a dredge.
挖泥船装有挖掘机的船
dredger:a barge or boat equipped with a dredge.
挖泥船:装有挖掘机的船.
We should have the dredge, barges and draglines in place about the same time.
差不多要在同时使挖泥机，驳船和索斗铲各就各位。
dredge:any of various machines equipped with scooping or suction devices and used to deepen harbors and waterways and in underwater mining.
"挖掘机:装有铲斗或吸泥设备,用于挖深港口与水道及水下开采的各种机器."
Any of various machines equipped with scooping or suction devices and used to deepen harbors and waterways and in underwater mining.
挖掘机装有铲斗或吸泥设备，用于挖深港口与水道及水下开采的各种机器
electric overhead travelling grab crane
桥式电动抓斗起重机
ship unloader with rope trolley
绳索小车抓斗卸船机
double-beam bridge type grab crane
双架桥式抓斗起重机
Research on Dredging Track Controlling and Integrated Monitored Control System of Wheel Dredging Boat;
斗轮式挖泥船挖掘轨迹控制及综合监控研究
endless chain trench excavator
循环链式多斗挖沟机
crawler walking single-dipper excavator
履带行走式单斗挖掘机