自然科学SAT - 技术对象

a heavy object, usually made of metal, designed to secure a vessel or structure firmly to the bottom of a body of water to prevent drifting

a spiral shape that looks like a coil, often seen in things like springs, screws, or some types of antennas

an electronic device used for playing video games on a television or display screen

a flying vehicle such as an aircraft that is controlled from afar and has no pilot

a light and airy material made by trapping gas bubbles in a solid or liquid substance during production

the specific equipment or materials carried by a vehicle for a particular purpose

an exact or very close copy of an object, often made to resemble the original in appearance and function

any vehicle designed for travel across or through water

a narrow boat that is light and has pointed ends, which can be moved using paddles

a specialized underwater vehicle designed to operate and navigate beneath the surface of water, typically used for exploration, research, or marine activities

the main body or framework of a ship or boat, typically the outer shell that provides buoyancy and protects against water

an object, often a missile or bullet, propelled through the air by force, typically for military or scientific purposes

an electronic instrument used to graphically display and analyze voltage signals over time, showing the waveform's amplitude, frequency, and other characteristics

a device or machine that is often unusual or complicated, made for a specific job

a mechanical device powered by flowing or falling water, typically used to generate mechanical power for tasks such as grinding grain or pumping water

an innovative device used in printing, casting individual lines of type from molten metal, significantly advancing the efficiency of typesetting

a distinct layer or level within a system, often conceived as having depth or hierarchy

a measuring instrument or device used to determine the size, capacity, amount, or extent of something

a richly decorative fabric characterized by raised patterns

a large sheet of strong, flexible material, typically made of canvas or polyethylene, used to protect or cover objects from weather or debris

an object from an earlier time, considered valuable due to its historical significance, craftsmanship, or rarity

a device in a vehicle that measures the distance traveled by counting the number of rotations of a vehicle's wheels

a writing tool made from a bird feather, typically the large flight feather of a goose or swan, with a sharpened end

a flat or curved object, often made of metal or plastic, designed to catch or direct airflow, typically used in weather vanes, turbines, or aircraft

weapons and ammunition used for military or defense purposes, including firearms, bombs, grenades, and missiles

an explosive device placed on railroad tracks, activated by passing trains to warn engineers of potential dangers ahead

a sharp projection or point, typically found on wire fencing, designed to deter and hinder passage or intrusion

a simple lighting device from earlier times, consisting of a rush stem soaked in fat or grease, used as a makeshift candle

a machine tool that rotates a workpiece so one can shape it by cutting, sanding, or drilling

a protruding structure that supports a building or wall and is made out of bricks or stones

cloth that is made from the fibers of a plant called flax, used to make fine clothes, etc.

a channel or pipeline used to transport water over a long distance, usually from a remote source to a town or city

a long, elevated structure that carries a railway or road across a valley or river, typically held up by a series of arches

(computing) the part of a computer by which all programs work