clamshell+dredge

См. также в других словарях:

• dredge — dredge1 /drej/, n., v., dredged, dredging. n. 1. Also called dredging machine. any of various powerful machines for dredging up or removing earth, as from the bottom of a river, by means of a scoop, a series of buckets, a suction pipe, or the… …   Universalium

• clamshell — noun Date: circa 1520 1. the shell of a clam 2. a. a bucket or grapple (as on a dredge) having two hinged jaws b. an excavating machine having a clamshell c. either of a pair of doors (as in an airplane tail) that open out and away from each… …   New Collegiate Dictionary

• grab dredge — noun or grab dredger : a dredger that operates with a clamshell …   Useful english dictionary

• grapple dredge — noun : a dredger that operates with a clamshell, orange peel, or other bucket …   Useful english dictionary

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• Bucket (machine part) — For other uses, see Bucket (disambiguation) and Scoop. A bucket (also called a scoop to qualify shallower designs of tools) is a specialized container attached to a machine, as compared to a bucket adapted to the form of a human being. It is a… …   Wikipedia

• undersea exploration — Introduction       the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments       Included in the scope of undersea exploration are the physical and chemical… …   Universalium

• dredging bucket — noun a bucket for lifting material from a channel or riverbed • Hypernyms: ↑bucket, ↑pail • Hyponyms: ↑clamshell, ↑grapple • Part Holonyms: ↑dredge * * * noun …   Useful english dictionary

• bucket — /buk it/, n., v., bucketed, bucketing. n. 1. a deep, cylindrical vessel, usually of metal, plastic, or wood, with a flat bottom and a semicircular bail, for collecting, carrying, or holding water, sand, fruit, etc.; pail. 2. anything resembling… …   Universalium