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Bottom trawling
| Fisheries glossary |
A fishing method that involves towing trawl nets along the sea floor. bottom trawling can cause serious damage to sea floor habitats.
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Bottom, английский
- Below-center hit on the cue ball
- 1. the underside of a vessel; the portion of a vessel that is always underwater; .
- 1. the part of the body on which you sit. buttock 2. the anus (informal )
- Дно
- The underside of a boat.
- Днище; морское дно, грунт
- A name for rich low land formed by alluvial deposits: but in a general sense it denotes the lowest part of a thing, in contradistinction to the top or uppermost part. in navigation, it is used to denote as well the channel of rivers and harbours as the body or hull of a ship. thus, in the former sense we say “a gravelly bottom, clayey bottom,” &c., and in the latter sense “a british bottom, a dutch bottom,” &c. by statute, certain commodities imported in foreign bottoms pay a duty called “petty customs,” over and above what they are liable to if imported in british bottoms. bottom of a ship or boat is that part which is below the wales.
- [1] a vessel’s lower hull, from bilge-tobilge, including the keel. [2] the sea bed or floor. [3] to sink to and rest on the sea bed (of a submarine).
- Surface in a borehole parallel to face of a drill bit.
- To place a drill bit in contact with the bottom of a borehole.
- To complete a borehole. 4. the landing at the bottom of a vertical or inclined mine shaft.
- Another term for low frequencies, usually below 125 hz.
- Refers to the base support level for market prices of any type. also used in the context of securities to refer to the lowest market price of a security during a specific time-frame.
Bottom, английский
Bottom, английский
Bottom (floor, английский
Bottom (low) pair, английский
Bottom -, английский
Глубинный водозабор dam ~ плотинный водозабор
Bottom app bar, английский
An app bar that appears along the bottom edge of the screen and may include app commands or navigation.
Bottom arm, английский
The arm mechanism which is attached to the bottom rail of a door, connecting it to the spindle of a floor closer or pivot. boss,1 boston hip
Bottom bed, английский
Bottom belt conveyor, английский
Bottom benching, английский
Bottom board, английский
- A removable grating in a small open boat.
- Floor panel of a van, particularly when removable (uk). see also loadfloor. bottoming (1) deflection of a vehicle suspension to its maximum compressive travel due to road surface irregularity or excessive load. (2) deflection of a pneumatic tire so that the carcass is momentarily
Bottom bolt, английский
A bolt at the bottom of a door; locks by slipping into a socket in the floor; may be held in the raised position by a catch.
Bottom bounce, английский
The technique of increasing effective sonar range by allowing transmitted sound waves to ricochet off the ocean floor.
Bottom bracket, английский
The bearing system that the pedals (and cranks) rotate around. contains a spindle to which the crankset is attached and the bearings themselves. there is a bearing surface on the spindle, and ones on the cups that thread into the frame. the bottom bracket
Bottom bracket (bottom braket cartridge), английский
Bottom break, английский
Bottom canch, английский
Bottom cap, английский
Bottom car clearance, английский
The clear vertical distance from the floor of an elevator pit to the lowest structural or mechanical part, equipment, or device installed beneath the elevator car platform (except for guide shoes or rollers, safety jaw assemblies, and platform aprons or guards) when the car rests on its fully compressed buffers.
Bottom chain strand, английский
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Purse seine, английский
A fishing technique capable of harvesting large quantities of surface-schooling pelagic fish by surrounding the school with a net. a line which passes through rings on the bottom of the net can be tightened to close the net so that the fish are unable to
Dropline, английский
A fishing line with one or more hooks, held vertically in the water column with weights and generally used on the continental shelf and slope. several droplines may be operated by a vessel, either on manually or mechanically operated reels.
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