According to the riverbed conditions of upstream section of Yangtze River, the operational adaptability of various types of dredgers has been compared with detailed description to the performance hydraulic rigid-arm grab dredger and its adaptability to hard riverbed dredging.
根据长江上游川江航道的河床特点,对各型挖泥船在该水域施工作业的适应性进行了比较,并对液压硬臂抓斗挖泥船性能特点以及挖掘硬质河床的良好适应性作了重点介绍,同时对适合于川江航道的抓斗船主要船型参数及设备配置等提出了自己的建议。
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
self-propelled grab dredger
自动推进式抓斗挖泥船
bucket ladder dredger
链斗挖泥船斗式采泥器
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。
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。
tipper lorry with grab
设有抓斗的自动卸斗货车
Gordeev prism grab
水底等深柱形采样抓斗
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
He seized his hat and gathered his cloak about him
他抓起帽子，披上斗篷。
endless chain trench excavator
循环链式多斗挖沟机
bucket wheel suction dredger
斗轮铲式抽吸挖泥机
crawler walking single-dipper excavator
履带行走式单斗挖掘机
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。
Closed mechanical grabs for dredging shall be maintained to avoid spillage and shall seal tightly while being lifted.
应使用密封式机械抓斗，以免物料溅溢，并于提起时保持抓斗密封。
Research on the Grab Open-closed Problem and Steel Wire Vibration of Four-Drum Grab Unloader;
四卷筒抓斗卸船机抓斗开闭及悬垂钢丝绳跳动研究
We must seize the key to do well PC(Party conduct) and CCHA( construction of a clean and honest administration) and to strive against corruption;
抓好党风廉政建设和反腐败斗争,必须抓住关键;